Fix constructor-related typos.

Noticed by Roman Divacky.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@190311 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaOverload.cpp b/lib/Sema/SemaOverload.cpp
index d2fd0d8..7e4e17b 100644
--- a/lib/Sema/SemaOverload.cpp
+++ b/lib/Sema/SemaOverload.cpp
@@ -3017,7 +3017,7 @@
       unsigned NumArgs = 1;
       bool ListInitializing = false;
       if (InitListExpr *InitList = dyn_cast<InitListExpr>(From)) {
-        // But first, see if there is an init-list-contructor that will work.
+        // But first, see if there is an init-list-constructor that will work.
         OverloadingResult Result = IsInitializerListConstructorConversion(
             S, From, ToType, ToRecordDecl, User, CandidateSet, AllowExplicit);
         if (Result != OR_No_Viable_Function)