Rename SourceLocation::getFileLocWithOffset -> getLocWithOffset.

It already works (and is useful with) macro locs as well.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@140057 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Lex/ScratchBuffer.cpp b/lib/Lex/ScratchBuffer.cpp
index 0e98c17..3d363fa 100644
--- a/lib/Lex/ScratchBuffer.cpp
+++ b/lib/Lex/ScratchBuffer.cpp
@@ -53,7 +53,7 @@
   // diagnostic points to one.
   CurBuffer[BytesUsed-1] = '\0';
 
-  return BufferStartLoc.getFileLocWithOffset(BytesUsed-Len-1);
+  return BufferStartLoc.getLocWithOffset(BytesUsed-Len-1);
 }
 
 void ScratchBuffer::AllocScratchBuffer(unsigned RequestLen) {