Harden/relax clang/test/CodeGen/opt-record-MIR.c test

Summary:
If the build path is short, `Line` field can end up fitting on the same line as `File`,
but the `{{.*}}` would consume it. Keeping in mind rL293149, i think we can fix it,
while keeping it working when there are and there are not any quotations.
At least this fixes this test for me.

Reviewers: anemet, aaron.ballman, hfinkel

Reviewed By: anemet

Subscribers: cfe-commits, llvm-commits

Differential Revision: https://reviews.llvm.org/D49348

llvm-svn: 337249

clang/test/CodeGen/opt-record-MIR.c

@@ -21,8 +21,9 @@ void foo(float *p, int i) {
 // YAML: --- !Missed
 // YAML: Pass:            regalloc
 // YAML: Name:            LoopSpillReload
-// YAML: DebugLoc:        { File: {{.*}},
-// YAML:                    Line: 10, Column: 11 }
+// YAML: DebugLoc:        { File: {{[^,]+}},
+// YAML:                    Line: 10,
+// YAML:                    Column: 11 }
 // YAML: Function:        foo
 // YAML: Args:
 // YAML:   - NumSpills:       '{{.}}'