Adjust a failing lit test

debug-loc-again is checking that we get DEBUG_LOC and then DEBUG_LOC_AGAIN,
testing that there's an 'op' after DEBUG_LOC to ensure it's the real
record. However we're now adding the real record with an abbrev, so update
to expect that.

Author: jmorse

llvm/test/Bitcode/debug-loc-again.ll

@@ -1,9 +1,9 @@
 ; RUN: llvm-as < %s | llvm-bcanalyzer -dump | FileCheck %s -check-prefix=BC
 ; PR23436: Actually emit DEBUG_LOC_AGAIN records.
 
-; BC: <DEBUG_LOC op
+; BC: <DEBUG_LOC abbrevid
 ; BC: <DEBUG_LOC_AGAIN/>
-; BC: <DEBUG_LOC op
+; BC: <DEBUG_LOC abbrevid
 ; BC: <DEBUG_LOC_AGAIN/>
 
 ; RUN: llvm-as < %s | llvm-dis | FileCheck %s