Fix accidentally used hard tabs. NFC

Big sorry. This undoes the indentation mess I made
in r354751.

llvm-svn: 354752
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index a36e080..43c8020 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -2007,7 +2007,7 @@
     unsigned Alignment = (unsigned)AlignmentCI->getZExtValue();
 
     EmitAlignmentAssumption(PtrValue, Ptr,
-				                    /*The expr loc is sufficient.*/ SourceLocation(),
+                            /*The expr loc is sufficient.*/ SourceLocation(),
                             Alignment, OffsetValue);
     return RValue::get(PtrValue);
   }