Fixes PR14801 - preprocessor directives shouldn't be indented

Uses indent 0 for macros for now and resets the indent state to the
level prior to the preprocessor directive.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171639 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Format/UnwrappedLineParser.cpp b/lib/Format/UnwrappedLineParser.cpp
index c1bafa9..2f3a603 100644
--- a/lib/Format/UnwrappedLineParser.cpp
+++ b/lib/Format/UnwrappedLineParser.cpp
@@ -27,10 +27,11 @@
   ScopedMacroState(UnwrappedLine &Line, FormatTokenSource *&TokenSource,
                    FormatToken &ResetToken)
       : Line(Line), TokenSource(TokenSource), ResetToken(ResetToken),
-        PreviousTokenSource(TokenSource) {
+        PreviousLineLevel(Line.Level), PreviousTokenSource(TokenSource) {
     TokenSource = this;
     // FIXME: Back up all other state (errors, line indent, etc) and reset after
     // parsing the macro.
+    Line.Level = 0;
     Line.InPPDirective = true;
   }
 
@@ -38,7 +39,7 @@
     TokenSource = PreviousTokenSource;
     ResetToken = Token;
     Line.InPPDirective = false;
-    Line.Level = 0;  // FIXME: Test + this is obviously incorrect
+    Line.Level = PreviousLineLevel;
   }
 
   virtual FormatToken getNextToken() {
@@ -65,7 +66,7 @@
   UnwrappedLine &Line;
   FormatTokenSource *&TokenSource;
   FormatToken &ResetToken;
-
+  unsigned PreviousLineLevel;
   FormatTokenSource *PreviousTokenSource;
 
   FormatToken Token;