add rowBytes param to setPreLock, in prep for onNewLockPixels change

src/core/SkMallocPixelRef.cpp

Index: src/core/SkMallocPixelRef.cpp
diff --git a/src/core/SkMallocPixelRef.cpp b/src/core/SkMallocPixelRef.cpp
index c3e605c358748b56cee33af1fb50b0c4f8ee6f19..075b5f6f2d7c71606bdf4cfadd8d896c30742807 100644
--- a/src/core/SkMallocPixelRef.cpp
+++ b/src/core/SkMallocPixelRef.cpp
@@ -152,7 +152,7 @@ SkMallocPixelRef::SkMallocPixelRef(const SkImageInfo& info, void* storage,
     fRB = rowBytes;
     SkSafeRef(ctable);
 
-    this->setPreLocked(fStorage, fCTable);
+    this->setPreLocked(fStorage, rowBytes, fCTable);
 }
 
 SkMallocPixelRef::SkMallocPixelRef(const SkImageInfo& info, void* storage,
@@ -175,7 +175,7 @@ SkMallocPixelRef::SkMallocPixelRef(const SkImageInfo& info, void* storage,
     fRB = rowBytes;
     SkSafeRef(ctable);
 
-    this->setPreLocked(fStorage, fCTable);
+    this->setPreLocked(fStorage, rowBytes, fCTable);
 }
 
 
@@ -234,5 +234,5 @@ SkMallocPixelRef::SkMallocPixelRef(SkFlattenableReadBuffer& buffer)
         fCTable = NULL;
     }
 
-    this->setPreLocked(fStorage, fCTable);
+    this->setPreLocked(fStorage, fRB, fCTable);
 }