Fix a typo from r326844; NFC

llvm-svn: 326845
diff --git a/clang/test/CodeGen/64bit-swiftcall.c b/clang/test/CodeGen/64bit-swiftcall.c
index 2eed2a4..f7d27d8 100644
--- a/clang/test/CodeGen/64bit-swiftcall.c
+++ b/clang/test/CodeGen/64bit-swiftcall.c
@@ -1033,7 +1033,7 @@
 // X86-64-LABEL: take_union_hom_fp_partial2(i64, float)
 // ARM64-LABEL: take_union_hom_fp_partial2(i64, float)
 
-// At one point, we emitted lifetime.ends without a matching lifetime.begin for
+// At one point, we emitted lifetime.ends without a matching lifetime.start for
 // CoerceAndExpanded args. Since we're not performing optimizations, neither
 // intrinsic should be emitted.
 // CHECK-LABEL: define void @no_lifetime_markers