Some minor code tidying.

src/Device/Primitive.hpp

@@ -47,11 +47,7 @@ namespace sw
 
 		PlaneEquation z;
 		PlaneEquation w;
-
-		union
-		{
-			PlaneEquation V[MAX_INTERFACE_COMPONENTS];
-		};
+		PlaneEquation V[MAX_INTERFACE_COMPONENTS];
 
 		// Masks for two-sided stencil
 		int64_t clockwiseMask;

src/Device/VertexProcessor.hpp

@@ -36,7 +36,10 @@ namespace sw
 		Vertex vertex[SIZE];
 		uint32_t tag[SIZE];
 
-		int drawCall;
+		// Identifier of the draw call for the cache data. If this cache is
+		// used with a different draw call, then the cache should be invalidated
+		// before use.
+		int drawCall = -1;
 	};
 
 	struct VertexTask

src/Main/FrameBufferAndroid.hpp

@@ -30,7 +30,7 @@ namespace sw
 
 		~FrameBufferAndroid() override;
 
-		void flip(sw::Surface *source) override {blit(source, nullptr, nullptr);};
+		void flip(sw::Surface *source) override {blit(source, nullptr, nullptr);}
 		void blit(sw::Surface *source, const Rect *sourceRect, const Rect *destRect) override;
 
 		void *lock() override;