replaces calls to LoadLibrary with explicit calls to LoadLibraryA (#216)

Author: bashbaug

loader/windows/icd_windows.c

@@ -273,7 +273,7 @@ BOOL CALLBACK khrIcdOsVendorsEnumerate(PINIT_ONCE InitOnce, PVOID Parameter, PVO
     }
 
     // Add adapters according to DXGI's preference order
-    HMODULE hDXGI = LoadLibrary("dxgi.dll");
+    HMODULE hDXGI = LoadLibraryA("dxgi.dll");
     if (hDXGI)
     {
         IDXGIFactory* pFactory = NULL;

loader/windows/icd_windows_apppackage.c

@@ -39,7 +39,7 @@ bool khrIcdOsVendorsEnumerateAppPackage(void)
     WCHAR *buffer = NULL;
     PWSTR *packages = NULL;
 
-    HMODULE h = LoadLibrary("kernel32.dll");
+    HMODULE h = LoadLibraryA("kernel32.dll");
     if (h == NULL)
         return ret;
 

loader/windows/icd_windows_dxgk.c

@@ -35,7 +35,7 @@ bool khrIcdOsVendorsEnumerateDXGK(void)
     int result = 0;
 
     // Get handle to GDI Runtime
-    HMODULE h = LoadLibrary("gdi32.dll");
+    HMODULE h = LoadLibraryA("gdi32.dll");
     if (h == NULL)
         return ret;