perf annotate: Get rid of offsets array

The struct annotated_source.offsets[] is to save pointers to
annotation_line at each offset.  We can use annotated_source__get_line()
helper instead so let's get rid of the array.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20240404175716.1225482-6-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/ui/browsers/annotate.c

@@ -977,7 +977,7 @@ int symbol__tui_annotate(struct map_symbol *ms, struct evsel *evsel,
 			dso->annotate_warned = true;
 			symbol__strerror_disassemble(ms, err, msg, sizeof(msg));
 			ui__error("Couldn't annotate %s:\n%s", sym->name, msg);
-			goto out_free_offsets;
+			return -1;
 		}
 	}
 
@@ -996,8 +996,5 @@ int symbol__tui_annotate(struct map_symbol *ms, struct evsel *evsel,
 	if(not_annotated)
 		annotated_source__purge(notes->src);
 
-out_free_offsets:
-	if(not_annotated)
-		zfree(&notes->src->offsets);
 	return ret;
 }