change SkStreams to work with sk_sp<SkData> instead of SkData*

src/ports/SkFontMgr_fontconfig.cpp

Index: src/ports/SkFontMgr_fontconfig.cpp
diff --git a/src/ports/SkFontMgr_fontconfig.cpp b/src/ports/SkFontMgr_fontconfig.cpp
index fd5f1b08304e4b6cc5a12168ef075696c3b08725..54fa1b3575711a39cbca7a7a66d32e35a05f6a5a 100644
--- a/src/ports/SkFontMgr_fontconfig.cpp
+++ b/src/ports/SkFontMgr_fontconfig.cpp
@@ -903,7 +903,7 @@ protected:
     }
 
     SkTypeface* onCreateFromData(SkData* data, int ttcIndex) const override {
-        return this->createFromStream(new SkMemoryStream(data), ttcIndex);
+        return this->createFromStream(new SkMemoryStream(sk_ref_sp(data)), ttcIndex);
     }
 
     SkTypeface* onCreateFromFile(const char path[], int ttcIndex) const override {