Fix 9patches' limitation of 32 empty quads

The 9patch format allows to define more empty quads than this, remove
the use of a single int to index empty quads and replace it with a
lookup in the 9patch resource data structure.

Change-Id: I148ee5d9e0c96822b534a344e15c9d88078db7c2
diff --git a/libs/hwui/Extensions.cpp b/libs/hwui/Extensions.cpp
index 218c18e..84e7e65 100644
--- a/libs/hwui/Extensions.cpp
+++ b/libs/hwui/Extensions.cpp
@@ -86,7 +86,7 @@
     // or more digits. The release number and vendor specific information are
     // optional."
 
-    if (sscanf(version, "OpenGL ES %d.%d", &mVersionMajor, &mVersionMinor) !=2) {
+    if (sscanf(version, "OpenGL ES %d.%d", &mVersionMajor, &mVersionMinor) != 2) {
         // If we cannot parse the version number, assume OpenGL ES 2.0
         mVersionMajor = 2;
         mVersionMinor = 0;