D3D9: Fix issue where the shader caches were lost whenever the render window was resized. Add some error logging to LinearDiskCache. + some minor cleanup.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@5747 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Plugins/Plugin_VideoDX9/Src/PixelShaderCache.cpp

@@ -258,6 +258,9 @@ void PixelShaderCache::Init()
 	if (!File::Exists(File::GetUserPath(D_SHADERCACHE_IDX)))
 		File::CreateDir(File::GetUserPath(D_SHADERCACHE_IDX));
 
+	SETSTAT(stats.numPixelShadersCreated, 0);
+	SETSTAT(stats.numPixelShadersAlive, 0);
+
 	char cache_filename[MAX_PATH];
 	sprintf(cache_filename, "%sdx9-%s-ps.cache", File::GetUserPath(D_SHADERCACHE_IDX), globals->unique_id);
 	PixelShaderCacheInserter inserter;