package/cpulimit: backport a fix for an infrequent crash

Backport the fix submitted from this pull request:

https://github.com/opsengine/cpulimit/pull/61

to fix an infrequent crash.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/cpulimit/0003-Fix-an-infrequent-crash.patch

@@ -0,0 +1,26 @@
+From 512998f967a9dab5e98010e1043985fc855d9f4e Mon Sep 17 00:00:00 2001
+From: Pavel Timofeev <timp87@gmail.com>
+Date: Thu, 14 Jul 2016 13:50:35 +0300
+Subject: [PATCH] Fix an infrequent crash
+
+Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
+[Upstream: https://github.com/opsengine/cpulimit/pull/61]
+---
+ src/process_iterator_linux.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/src/process_iterator_linux.c b/src/process_iterator_linux.c
+index c8cdd07adcbe..93b44bab1755 100644
+--- a/src/process_iterator_linux.c
++++ b/src/process_iterator_linux.c
+@@ -98,6 +98,7 @@ static int read_process_info(pid_t pid, struct process *p)
+ 	//read command line
+ 	sprintf(exefile,"/proc/%d/cmdline", p->pid);
+ 	fd = fopen(exefile, "r");
++	if (fd==NULL) return -1;
+ 	if (fgets(buffer, sizeof(buffer), fd)==NULL) {
+ 		fclose(fd);
+ 		return -1;
+-- 
+2.25.1
+