The attribute nothrow maps to llvm attribute nounwind. Fix testcase.

llvm-svn: 47841
diff --git a/clang/test/CodeGen/attributes.c b/clang/test/CodeGen/attributes.c
index 73e0601..3533d6d 100644
--- a/clang/test/CodeGen/attributes.c
+++ b/clang/test/CodeGen/attributes.c
@@ -21,6 +21,6 @@
 int t6 __attribute__((visibility(protected)));
 
 // RUN: clang -emit-llvm < %s | grep 't7.*noreturn'
-// RUN: clang -emit-llvm < %s | grep 't7.*nothrow'
+// RUN: clang -emit-llvm < %s | grep 't7.*nounwind'
 void t7() __attribute__((noreturn, nothrow));
 void t7() {}