Creating a 0x0 texture fails.

TRAC #11792

Signed-off-by: Nicolas Capens
Signed-off-by: Daniel Koch

Author:    Andrew Lewycky

git-svn-id: https://angleproject.googlecode.com/svn/trunk@150 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/src/libGLESv2/libGLESv2.cpp b/src/libGLESv2/libGLESv2.cpp
index 651f9fd..ff88c74 100644
--- a/src/libGLESv2/libGLESv2.cpp
+++ b/src/libGLESv2/libGLESv2.cpp
@@ -822,7 +822,7 @@
           case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
           case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
           case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
-            if (!gl::isPow2(width) || !gl::isPow2(height))
+            if (width != height)
             {
                 return error(GL_INVALID_VALUE);
             }
@@ -3506,7 +3506,7 @@
           case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
           case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
           case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
-            if (!gl::isPow2(width) || !gl::isPow2(height))
+            if (width != height)
             {
                 return error(GL_INVALID_VALUE);
             }