perf pmu: Simplify an asprintf error message

Use ifs rather than ?: to avoid a large compound statement.

Signed-off-by: Ian Rogers <[e-mail]>
Acked-by: Namhyung Kim <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Namhyung Kim <[e-mail]>

tools/perf/util/pmu.c

···
 		if (err) {
 			char *err_str;
 
-			parse_events_error__handle(err, term->err_val,
-				asprintf(&err_str,
-				    "value too big for format (%s), maximum is %llu",
-				    format->name, (unsigned long long)max_val) < 0
-				    ? strdup("value too big for format")
-				    : err_str,
-				    NULL);
+			if (asprintf(&err_str,
+				     "value too big for format (%s), maximum is %llu",
+				     format->name, (unsigned long long)max_val) < 0) {
+				err_str = strdup("value too big for format");
+			}
+			parse_events_error__handle(err, term->err_val, err_str, /*help=*/NULL);
 			return -EINVAL;
 		}
 		/*