Fix two paste-avoidance bugs I introduced last night.  Patch
by Neil Booth.  This fixes Preprocessor/output_paste_avoid.c


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@40454 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Driver/PrintPreprocessedOutput.cpp b/Driver/PrintPreprocessedOutput.cpp
index 87180f4..d5c5b9a 100644
--- a/Driver/PrintPreprocessedOutput.cpp
+++ b/Driver/PrintPreprocessedOutput.cpp
@@ -426,7 +426,7 @@
     if (Tok.getKind() == tok::equal ||
         Tok.getKind() == tok::equalequal)
       return true;
-    ConcatInfo &= ~ConcatInfo;
+    ConcatInfo &= ~aci_avoid_equal;
   }
   
   if (ConcatInfo == 0) return false;
@@ -540,7 +540,7 @@
     } else if (Tok.hasLeadingSpace() || 
                // If we haven't emitted a token on this line yet, PrevTok isn't
                // useful to look at and no concatenation could happen anyway.
-               (!Callbacks->hasEmittedTokensOnThisLine() &&
+               (Callbacks->hasEmittedTokensOnThisLine() &&
                 // Don't print "-" next to "-", it would form "--".
                 Callbacks->AvoidConcat(PrevTok, Tok))) {
       OutputChar(' ');