[FileCheck] Add missing final dot in comment

llvm-svn: 365190
diff --git a/llvm/lib/Support/FileCheck.cpp b/llvm/lib/Support/FileCheck.cpp
index 39b9e326..1fb410a 100644
--- a/llvm/lib/Support/FileCheck.cpp
+++ b/llvm/lib/Support/FileCheck.cpp
@@ -660,7 +660,7 @@
         bool UndefSeen = false;
         handleAllErrors(MatchedValue.takeError(),
                         [](const FileCheckNotFoundError &E) {},
-                        // Handled in PrintNoMatch()
+                        // Handled in PrintNoMatch().
                         [](const FileCheckErrorDiagnostic &E) {},
                         [&](const FileCheckUndefVarError &E) {
                           if (!UndefSeen) {