Remove constness from this, it modifies the output stream as does
everything else underneath.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168395 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index ed52e3f..e929fef 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -1796,7 +1796,7 @@
 
 /// emitAbbreviations - Emit the abbreviation section.
 ///
-void DwarfDebug::emitAbbreviations() const {
+void DwarfDebug::emitAbbreviations() {
   // Check to see if it is worth the effort.
   if (!Abbreviations.empty()) {
     // Start the debug abbrev section.