perf tools: Cleanup realloc use

The if branch is completely unnecessary since 'realloc' handles NULL
pointers for the first parameter.

This is really only a cleanup and submitted mainly to prevent
proliferation of bad practices.

Signed-off-by: Ulrich Drepper <drepper@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Robert Richter <robert.richter@amd.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/201204231304.q3ND4TFe020805@drepperk.user.openhosting.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 6 insertions, 11 deletions

diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 4c7c2d73251..6e618ba2138 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -31,21 +31,16 @@ static const char **header_argv;
 
 int perf_header__push_event(u64 id, const char *name)
 {
+        struct perf_trace_event_type *nevents;
+
         if (strlen(name) > MAX_EVENT_NAME)
                 pr_warning("Event %s will be truncated\n", name);
 
-        if (!events) {
-                events = malloc(sizeof(struct perf_trace_event_type));
-                if (events == NULL)
-                        return -ENOMEM;
-        } else {
-                struct perf_trace_event_type *nevents;
+        nevents = realloc(events, (event_count + 1) * sizeof(*events));
+        if (nevents == NULL)
+                return -ENOMEM;
+        events = nevents;
 
-                nevents = realloc(events, (event_count + 1) * sizeof(*events));
-                if (nevents == NULL)
-                        return -ENOMEM;
-                events = nevents;
-        }
         memset(&events[event_count], 0, sizeof(struct perf_trace_event_type));
         events[event_count].event_id = id;
         strncpy(events[event_count].name, name, MAX_EVENT_NAME - 1);