[PATCH 05/12] startup: fix unused resuls warnings

[dnietoc]

From: Diego Nieto Cid <dnie...@gmail.com>

    ../../startup/startup.c: In function 'process_signal':
    ../../startup/startup.c:1251:17: warning: ignoring return value of 
'asprintf' declared with attribute 'warn_unused_result' [-Wunused-result]
    ../../startup/startup.c:1254:17: warning: ignoring return value of 
'asprintf' declared with attribute 'warn_unused_result' [-Wunused-result]
    ../../startup/startup.c:1259:17: warning: ignoring return value of 
'asprintf' declared with attribute 'warn_unused_result' [-Wunused-result]
---
 startup/startup.c | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/startup/startup.c b/startup/startup.c
index 53d46982..0e98fcf1 100644
--- a/startup/startup.c
+++ b/startup/startup.c
@@ -1240,7 +1240,7 @@ process_signal (int signo)
          if (pid == child_pid)
            {
              /* The big magilla bit the dust.  */
-
+             error_t err;
              char *desc = 0;
 
              mach_port_deallocate (mach_task_self (), child_task);
@@ -1248,16 +1248,18 @@ process_signal (int signo)
              child_pid = -1;
 
              if (WIFSIGNALED (status))
-               asprintf (&desc, "terminated abnormally (%s)",
-                         strsignal (WTERMSIG (status)));
+               err = asprintf (&desc, "terminated abnormally (%s)",
+                               strsignal (WTERMSIG (status)));
              else if (WIFSTOPPED (status))
-               asprintf (&desc, "stopped abnormally (%s)",
-                         strsignal (WTERMSIG (status)));
+               err = asprintf (&desc, "stopped abnormally (%s)",
+                               strsignal (WTERMSIG (status)));
              else if (WEXITSTATUS (status) == 0)
-               desc = strdup ("finished");
+               desc = strdup ("finished"), err = (desc == 0 ? -1 : 0);
              else
-               asprintf (&desc, "exited with status %d",
-                         WEXITSTATUS (status));
+               err = asprintf (&desc, "exited with status %d",
+                               WEXITSTATUS (status));
+             if (err == -1)
+               error (0, errno, "failed to allocate message string");
 
              {
                char buf[40];
-- 
2.51.0