Add explicit keywords.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48801 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMJITInfo.h b/lib/Target/ARM/ARMJITInfo.h
index 2004879..81d896b 100644
--- a/lib/Target/ARM/ARMJITInfo.h
+++ b/lib/Target/ARM/ARMJITInfo.h
@@ -22,7 +22,7 @@
   class ARMJITInfo : public TargetJITInfo {
     ARMTargetMachine &TM;
   public:
-    ARMJITInfo(ARMTargetMachine &tm) : TM(tm) {useGOT = 0;}
+    explicit ARMJITInfo(ARMTargetMachine &tm) : TM(tm) {useGOT = 0;}
 
     /// replaceMachineCodeForFunction - Make it so that calling the function
     /// whose machine code is at OLD turns into a call to NEW, perhaps by