Fix windows build

MSVC does not like: sizeof(T[N])

Change-Id: If7586a0d29f609372e036fdb31481e923469a7ad
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/26349
Reviewed-by: Alexis Hétu <sugoi@google.com>
Tested-by: Ben Clayton <bclayton@google.com>

src/Pipeline/SpirvShader.hpp

@@ -68,7 +68,7 @@ namespace sw
 
 		Intermediate(uint32_t size) : contents(new ContentsType[size]), size(size) {
 #if !defined(NDEBUG) || defined(DCHECK_ALWAYS_ON)
-			memset(contents, 0, sizeof(ContentsType[size]));
+			memset(contents, 0, sizeof(ContentsType) * size);
 #endif
 		}