change MCContext to always have an MCAsmInfo.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98293 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCContext.cpp b/lib/MC/MCContext.cpp
index cf8177c..46eb02f 100644
--- a/lib/MC/MCContext.cpp
+++ b/lib/MC/MCContext.cpp
@@ -14,7 +14,7 @@
 #include "llvm/ADT/Twine.h"
 using namespace llvm;
 
-MCContext::MCContext() {
+MCContext::MCContext(const MCAsmInfo &mai) : MAI(mai), NextUniqueID(0) {
 }
 
 MCContext::~MCContext() {