Fix VC++ ptr-to-... and va_list confusion

R=bungeman@google.com

Author: bsalomon@google.com

Review URL: https://codereview.chromium.org/78903006

git-svn-id: http://skia.googlecode.com/svn/trunk@12346 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/core/SkString.cpp b/src/core/SkString.cpp
index 7b3c265..e30b89f 100644
--- a/src/core/SkString.cpp
+++ b/src/core/SkString.cpp
@@ -569,7 +569,7 @@
     this->append(buffer, strlen(buffer));
 }
 
-void SkString::appendf(const char format[], va_list args) {
+void SkString::appendVAList(const char format[], va_list args) {
     char    buffer[kBufferSize];
     VSNPRINTF(buffer, kBufferSize, format, args);