Fix Windows

Author: mdboom

cuda_bindings/cuda/bindings/cyruntime.pyx.in

@@ -1901,10 +1901,11 @@ cdef cudaError_t getLocalRuntimeVersion(int* runtimeVersion) except ?cudaErrorCa
         handle = <void *><uintptr_t>lib._handle_uint
 
     {{if 'Windows' == platform.system()}}
-    try:
-        __cudaRuntimeGetVersion = <void*><unsigned long long>win32api.GetProcAddress(<uintptr_t>handle, 'cudaRuntimeGetVersion')
-    except:
-        pass
+    with gil:
+        try:
+            __cudaRuntimeGetVersion = <void*><unsigned long long>win32api.GetProcAddress(<uintptr_t>handle, 'cudaRuntimeGetVersion')
+        except:
+            pass
     {{else}}
     __cudaRuntimeGetVersion = dlfcn.dlsym(handle, 'cudaRuntimeGetVersion')
     {{endif}}