perf probe: Fix to add missed brace around if block

The commit 75186a9b09e4 (perf probe: Fix to show lines of sys_ functions
correctly) introduced a bug by a missed brace around if block. This
fixes to add it.

Signed-off-by: Masami Hiramatsu <[e-mail]>
Cc: David Ahern <[e-mail]>
Cc: Jiri Olsa <[e-mail]>
Cc: Namhyung Kim <[e-mail]>
Fixes: 75186a9b09e4 ("perf probe: Fix to show lines of sys_ functions correctly")
Link: http://lkml.kernel.org/r/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/util/dwarf-aux.c

···
 			continue;
 		}
 		/* Filter lines based on address */
-		if (rt_die != cu_die)
+		if (rt_die != cu_die) {
 			/*
 			 * Address filtering
 			 * The line is included in given function, and
···
 				    decf != dwarf_decl_file(&die_mem))
 					continue;
 			}
+		}
 		/* Get source line */
 		fname = dwarf_linesrc(line, NULL, NULL);