Don't try to set gamma treatment if texture creation fails.

src/gpu/SkGr.cpp

 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "SkGr.h"
 #include "SkGrPriv.h"
@@ skipping 376 matching lines @@
         mipmaps->getLevel(i - 1, &generatedMipLevel);
         texels[i].fPixels = generatedMipLevel.fPixmap.addr();
         texels[i].fRowBytes = generatedMipLevel.fPixmap.rowBytes();
     }
 
     {
         GrTexture* texture = ctx->textureProvider()->createMipMappedTexture(desc,
                                                                             SkBudgeted::kYes,
                                                                             texels.get(),
                                                                             mipLevelCount);
-        texture->texturePriv().setGammaTreatment(gammaTreatment);
+        if (texture) {
+            texture->texturePriv().setGammaTreatment(gammaTreatment);
+        }
         return texture;
     }
 }
 
 GrTexture* GrUploadMipMapToTexture(GrContext* ctx, const SkImageInfo& info,
                                    const GrMipLevel* texels, int mipLevelCount) {
     const GrCaps* caps = ctx->caps();
     return ctx->textureProvider()->createMipMappedTexture(GrImageInfoToSurfaceDesc(info, *caps),
                                                           SkBudgeted::kYes, texels,
                                                           mipLevelCount);
@@ skipping 363 matching lines @@
             SkErrorInternals::SetError( kInvalidPaint_SkError,
                                         "Sorry, I don't understand the filtering "
                                         "mode you asked for.  Falling back to "
                                         "MIPMaps.");
             textureFilterMode = GrTextureParams::kMipMap_FilterMode;
             break;
 
     }
     return textureFilterMode;
 }