Regressions on trunk at revision 251019 vs revision 250984

[H.J. Lu x32]

New failures:
FAIL: objc.dg/proto-lossage-4.m -fgnu-runtime (test for excess errors)
FAIL: objc.dg/proto-lossage-4.m -fgnu-runtime  (test for warnings, line 30)
FAIL: objc.dg/proto-lossage-4.m -fgnu-runtime  (test for warnings, line 36)
FAIL: objc.dg/proto-lossage-4.m -fgnu-runtime  (test for warnings, line 44)

New passes: