Remove another caller of SkRef(SkStream)

src/ports/SkFontHost_linux.cpp

Index: src/ports/SkFontHost_linux.cpp
diff --git a/src/ports/SkFontHost_linux.cpp b/src/ports/SkFontHost_linux.cpp
index b6fab622e8fcc776195f6e8719d66cde18aacd60..04792f8bf20486e9f69ccb8d498d9fd0702534de 100644
--- a/src/ports/SkFontHost_linux.cpp
+++ b/src/ports/SkFontHost_linux.cpp
@@ -85,7 +85,7 @@ public:
     SkTypeface_Stream(const SkFontStyle& style, bool isFixedPitch, bool sysFont,
                       const SkString familyName, SkStream* stream, int index)
         : INHERITED(style, isFixedPitch, sysFont, familyName, index)
-        , fStream(SkRef(stream))
+        , fStream(stream)
     { }
 
     const char* getUniqueString() const SK_OVERRIDE { return NULL; }