Fix OpenGL errors in various places.

Change-Id: I3a4e115d8fb13b6c443e65460d92987b16f2524c
diff --git a/libs/hwui/TextureCache.cpp b/libs/hwui/TextureCache.cpp
index ca455d8..adf6ee2 100644
--- a/libs/hwui/TextureCache.cpp
+++ b/libs/hwui/TextureCache.cpp
@@ -159,8 +159,8 @@
         return;
     }
 
-    const bool resize = !regenerate || bitmap->width() != texture->width ||
-            bitmap->height() != texture->height;
+    const bool resize = !regenerate || bitmap->width() != int(texture->width) ||
+            bitmap->height() != int(texture->height);
 
     if (!regenerate) {
         glGenTextures(1, &texture->id);