Fixup comment.

llvm-svn: 70040
diff --git a/clang/lib/Frontend/PCHReader.cpp b/clang/lib/Frontend/PCHReader.cpp
index 78be893..300761a 100644
--- a/clang/lib/Frontend/PCHReader.cpp
+++ b/clang/lib/Frontend/PCHReader.cpp
@@ -1751,7 +1751,7 @@
         unsigned NumArgs = Record[Idx++];
         KeyIdents.clear();
         if (NumArgs == 0) {
-          // If the number of arguments is 0, the we must have an Identifier.
+          // If the number of arguments is 0, we must have an Identifier.
           IdentifierInfo *II = DecodeIdentifierInfo(Record[Idx++]);
           assert(II && "DecodeIdentifierInfo returned 0");
           KeyIdents.push_back(II);