InstructionSimplify.cpp: Fix a ligature, "fi", to get rid of utf8 in comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179066 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/InstructionSimplify.cpp b/lib/Analysis/InstructionSimplify.cpp
index 4a3c74e..bf77451 100644
--- a/lib/Analysis/InstructionSimplify.cpp
+++ b/lib/Analysis/InstructionSimplify.cpp
@@ -1711,7 +1711,7 @@
 //    subobject at its beginning) or function, both are pointers to one past the
 //    last element of the same array object, or one is a pointer to one past the
 //    end of one array object and the other is a pointer to the start of a
-//    different array object that happens to immediately follow the first array
+//    different array object that happens to immediately follow the first array
 //    object in the address space.)
 //
 // C11's version is more restrictive, however there's no reason why an argument