Fix compiler warning

Author: kovidgoyal

src/stack.h

@@ -19,7 +19,7 @@ STACK_CLASS(StackClass)
 
 static inline StackClass*
 FNAME(alloc)(size_t sz) {
-    StackClass *ans = calloc(sizeof(StackClass), 1);
+    StackClass *ans = calloc(1, sizeof(StackClass));
     if (ans) {
         ans->items = (StackItemClass*)malloc(sizeof(StackItemClass) * sz);
         if (ans->items) ans->capacity = sz;

test.c

@@ -7,13 +7,13 @@
 
 #include <Python.h>
 
-int 
+int
 main(int argc, char **argv) {
 #if PY_MAJOR_VERSION >= 3
     wchar_t *argw[1024] = {0};
     int i;
     for (i = 0; i < argc; i++) {
-        argw[i] = (wchar_t*)calloc(sizeof(wchar_t), 1024);
+        argw[i] = (wchar_t*)calloc(1024, sizeof(wchar_t));
         swprintf(argw[i], 1024, L"%hs", argv[i]);
     }
     return Py_Main(argc, argw);