fix: replace nullptr with 0 for integer return types to prevent crashes

Author: bobtista

Core/Libraries/Source/WWVegas/WW3D2/animatedsoundmgr.cpp

@@ -439,11 +439,11 @@ const char*
 AnimatedSoundMgrClass::Get_Embedded_Sound_Name (HAnimClass *anim)
 {
 	if (anim == nullptr) {
-		return nullptr;
+		return 0;
 	}
 	ANIM_SOUND_LIST* list = Find_Sound_List (anim);
 	if (list == nullptr) {
-		return nullptr;
+		return 0;
 	}
 
 	return list->BoneName.str();

Core/Libraries/Source/WWVegas/WW3D2/composite.cpp

@@ -554,7 +554,7 @@ void CompositeRenderObjClass::Set_User_Data(void *value, bool recursive)
 const char * CompositeRenderObjClass::Get_Base_Model_Name (void) const
 {
 	if (BaseModelName.Is_Empty()) {
-		return nullptr;
+		return 0;
 	}
 
 	return BaseModelName;

Core/Libraries/Source/WWVegas/WW3D2/distlod.cpp

@@ -138,14 +138,14 @@ PrototypeClass *DistLODLoaderClass::Load_W3D( ChunkLoadClass &cload )
 
 	if (pCDistLODClass == nullptr)
 	{
-		return nullptr;
+		return 0;
 	}
 
 	if (pCDistLODClass->Load_W3D(cload) != WW3D_ERROR_OK)
 	{
 		// load failed, delete the model and return an error
 		delete pCDistLODClass;
-		return nullptr;
+		return 0;
 
 	} else {
 
@@ -586,7 +586,7 @@ RenderObjClass * DistLODClass::Get_Sub_Object(int index) const
 	assert(index < LodCount);
 
 	if (Lods[index].Model == nullptr) {
-		return nullptr;
+		return 0;
 	} else {
 		Lods[index].Model->Add_Ref();
 		return Lods[index].Model;

Core/Libraries/Source/WWVegas/WW3D2/intersec.cpp

@@ -348,7 +348,7 @@ RenderObjClass *IntersectionClass::Intersect_Sub_Object(float screenx, float scr
 	if (Intersect_Screen_Point_RenderObject(screenx, screeny, layer, robj, result)) {
 		return robj;
 	}
-	return nullptr;
+	return 0;
 }
 
 // finds the intersection of the nearest object in the array.

Core/Libraries/Source/WWVegas/WW3D2/matinfo.cpp

@@ -192,7 +192,7 @@ TextureClass * MaterialRemapperClass::Remap_Texture(TextureClass * src)
 		}
 	}
 	WWASSERT(0); // uh-oh didn't find the texture, what happend???
-	return nullptr;
+	return 0;
 }
 
 VertexMaterialClass * MaterialRemapperClass::Remap_Vertex_Material(VertexMaterialClass * src)
@@ -207,7 +207,7 @@ VertexMaterialClass * MaterialRemapperClass::Remap_Vertex_Material(VertexMateria
 		}
 	}
 	WWASSERT(0); // uh-oh didn't find the material, what happend???
-	return nullptr;
+	return 0;
 }
 
 void MaterialRemapperClass::Remap_Mesh(const MeshMatDescClass * srcmeshmatdesc, MeshMatDescClass * destmeshmatdesc)

Core/Libraries/Source/WWVegas/WW3D2/proto.cpp

@@ -123,15 +123,15 @@ PrototypeClass * MeshLoaderClass::Load_W3D(ChunkLoadClass & cload)
 	MeshClass * mesh = NEW_REF( MeshClass, () );
 
 	if (mesh == nullptr) {
-		return nullptr;
+		return 0;
 	}
 
 	if (mesh->Load_W3D(cload) != WW3D_ERROR_OK) {
 
 		// if the load failed, delete the mesh
 		assert(mesh->Num_Refs() == 1);
 		mesh->Release_Ref();
-		return nullptr;
+		return 0;
 
 	} else {
 
@@ -161,14 +161,14 @@ PrototypeClass * HModelLoaderClass::Load_W3D(ChunkLoadClass & cload)
 	HModelDefClass * hdef = W3DNEW HModelDefClass;
 
 	if (hdef == nullptr) {
-		return nullptr;
+		return 0;
 	}
 
 	if (hdef->Load_W3D(cload) != HModelDefClass::OK) {
 
 		// load failed, delete the model and return an error
 		delete hdef;
-		return nullptr;
+		return 0;
 
 	} else {
 

Core/Libraries/Source/WWVegas/WW3D2/stripoptimizer.cpp

@@ -508,7 +508,7 @@ inline Triangle* TriangleQueue::getTop	(void) const
 	for (int i = 0; i < 4; i++)
 	if (m_bin[i])
 		return m_bin[i];				// return head
-	return nullptr;							// end
+	return 0;							// end
 }
 
 /*****************************************************************************
@@ -834,7 +834,7 @@ Triangle* Stripify::generateTriangleList (const Vector3i* inTris, int N)
 int* Stripify::stripify  (const Vector3i* inTris, int N)
 {
 	if (!inTris || N<=0)												// boo!
-		return nullptr;
+		return 0;
 
 	//--------------------------------------------------------------------
 	// Initial setup

Core/Libraries/Source/WWVegas/WWDebug/wwmemlog.cpp

@@ -292,7 +292,7 @@ WWINLINE void * Get_Mem_Log_Mutex(void)
 #endif
 
 #if DISABLE_MEMLOG
-	return nullptr;
+	return 0;
 #endif
 }
 

Core/Libraries/Source/WWVegas/WWLib/argv.cpp

@@ -135,7 +135,7 @@ const char *ArgvClass::Find_Again(const char *arg)
 			}
 		}
 	}
-	return nullptr;
+	return 0;
 }
 
 /***********************************************************************************************

Core/Libraries/Source/WWVegas/WWLib/hash.cpp

@@ -116,7 +116,7 @@ HashableClass * HashTableClass::Find( const char * key )
 			return node;
 		}
 	}
-	return nullptr;
+	return 0;
 }
 
 int	HashTableClass::Hash( const char * key )