Add SkFUZZF to help whitelist imagefilter fuzz failures

src/core/SkImageFilter.cpp

Index: src/core/SkImageFilter.cpp
diff --git a/src/core/SkImageFilter.cpp b/src/core/SkImageFilter.cpp
index 743dc2ad1afaf08685a27b45c7a609c23fdeb262..b20262e702ebca1237c158f8f5b0ab207f9400de 100644
--- a/src/core/SkImageFilter.cpp
+++ b/src/core/SkImageFilter.cpp
@@ -12,6 +12,7 @@
 #include "SkBitmapDevice.h"
 #include "SkChecksum.h"
 #include "SkDevice.h"
+#include "SkFuzzLogging.h"
 #include "SkLocalMatrixImageFilter.h"
 #include "SkMatrixImageFilter.h"
 #include "SkOncePtr.h"
@@ -137,6 +138,7 @@ bool SkImageFilter::Common::unflatten(SkReadBuffer& buffer, int expectedCount) {
         return false;
     }
 
+    SkFUZZF(("allocInputs: %d\n", count));
     this->allocInputs(count);
     for (int i = 0; i < count; i++) {
         if (buffer.readBool()) {