GPU: Ignore viewport for scissor of 481.

Assume it's still wrong in this case and take 480x272.  See hrydgard#12746.

GPU/Common/FramebufferCommon.cpp

@@ -151,16 +151,17 @@ void FramebufferManagerCommon::EstimateDrawingSize(u32 fb_address, GEBufferForma
 			drawing_width = scissor_width;
 			drawing_height = std::max(drawing_height, scissor_height);
 		}
-		if (scissor_width == 481 && region_width == 480 && scissor_height == 273 && region_height == 272) {
-			drawing_width = 480;
-			drawing_height = 272;
-		}
 	} else {
 		// If viewport wasn't valid, let's just take the greatest anything regardless of stride.
 		drawing_width = std::min(std::max(region_width, scissor_width), fb_stride);
 		drawing_height = std::max(region_height, scissor_height);
 	}
 
+	if (scissor_width == 481 && region_width == 480 && scissor_height == 273 && region_height == 272) {
+		drawing_width = 480;
+		drawing_height = 272;
+	}
+
 	// Assume no buffer is > 512 tall, it couldn't be textured or displayed fully if so.
 	if (drawing_height >= MAX_FRAMEBUF_HEIGHT) {
 		if (region_height < MAX_FRAMEBUF_HEIGHT) {