Hamfisted "fix" for pinterest blur crash

src/effects/SkBlurMaskFilter.cpp

 
 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBlurMaskFilter.h"
 #include "SkBlurMask.h"
@@ skipping 274 matching lines @@
     // fractional phase on the fRight or fBottom of our smallR.
     const SkScalar dx = SkIntToScalar(innerIR.width() - smallW);
     const SkScalar dy = SkIntToScalar(innerIR.height() - smallH);
     if (dx < 0 || dy < 0) {
         // we're too small, relative to our blur, to break into nine-patch,
         // so we ask to have our normal filterMask() be called.
         return kUnimplemented_FilterReturn;
     }
 
     smallR[0].set(rects[0].left(), rects[0].top(), rects[0].right() - dx, rects[0].bottom() - dy);
-    SkASSERT(!smallR[0].isEmpty());
+    if (smallR[0].width() < 2 || smallR[0].height() < 2) {
+        return kUnimplemented_FilterReturn;
+    }
     if (2 == count) {
         smallR[1].set(rects[1].left(), rects[1].top(),
                       rects[1].right() - dx, rects[1].bottom() - dy);
         SkASSERT(!smallR[1].isEmpty());
     }
 
     if (count > 1 || !c_analyticBlurNinepatch) {
         if (!drawRectsIntoMask(smallR, count, &srcM)) {
             return kFalse_FilterReturn;
         }
@@ skipping 165 matching lines @@
     } else {
         str->append("None");
     }
     str->append("))");
 }
 #endif
 
 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkBlurMaskFilter)
     SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkBlurMaskFilterImpl)
 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END