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/CodeGen/CGCall.cpp b/lib/CodeGen/CGCall.cpp
index 8a67279..806f7b8 100644
--- a/lib/CodeGen/CGCall.cpp
+++ b/lib/CodeGen/CGCall.cpp
@@ -175,7 +175,7 @@
 /// constructor or destructor.
 const CGFunctionInfo &
 CodeGenTypes::arrangeCXXMethodDeclaration(const CXXMethodDecl *MD) {
-  assert(!isa<CXXConstructorDecl>(MD) && "wrong method for contructors!");
+  assert(!isa<CXXConstructorDecl>(MD) && "wrong method for constructors!");
   assert(!isa<CXXDestructorDecl>(MD) && "wrong method for destructors!");
 
   CanQual<FunctionProtoType> prototype = GetFormalType(MD);