sweep up -Wformat warnings from gcc

This is a purely mechanical change explicitly casting any parameters for printf
style conversion.  This cleans up the warnings emitted by gcc 4.8 on Linux.

llvm-svn: 205607
diff --git a/lldb/source/Symbol/SymbolVendor.cpp b/lldb/source/Symbol/SymbolVendor.cpp
index b51ac5a..bfa5600 100644
--- a/lldb/source/Symbol/SymbolVendor.cpp
+++ b/lldb/source/Symbol/SymbolVendor.cpp
@@ -382,7 +382,7 @@
     {
         bool show_context = false;
 
-        s->Printf("%p: ", this);
+        s->Printf("%p: ", static_cast<void*>(this));
         s->Indent();
         s->PutCString("SymbolVendor");
         if (m_sym_file_ap.get())