llvm-pdbdump: If we don't change the color, don't reset the color.

The -output-color option was successful at suppressing color changes, but
was still allowing color resets.

Differential Revision: https://reviews.llvm.org/D31468

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@299006 91177308-0d34-0410-b5e6-96231b3b80d8

tools/llvm-pdbdump/LinePrinter.cpp

@@ -83,12 +83,16 @@ bool LinePrinter::IsCompilandExcluded(llvm::StringRef CompilandName) {
                         ExcludeCompilandFilters);
 }
 
-WithColor::WithColor(LinePrinter &P, PDB_ColorItem C) : OS(P.OS) {
-  if (P.hasColor())
+WithColor::WithColor(LinePrinter &P, PDB_ColorItem C)
+    : OS(P.OS), UseColor(P.hasColor()) {
+  if (UseColor)
     applyColor(C);
 }
 
-WithColor::~WithColor() { OS.resetColor(); }
+WithColor::~WithColor() {
+  if (UseColor)
+    OS.resetColor();
+}
 
 void WithColor::applyColor(PDB_ColorItem C) {
   switch (C) {

tools/llvm-pdbdump/LinePrinter.h

@@ -89,6 +89,7 @@ class WithColor {
 private:
   void applyColor(PDB_ColorItem C);
   raw_ostream &OS;
+  bool UseColor;
 };
 }
 }