File unlink-pidfile-on-error.patch of Package openhpi

Index: openhpi-3.8.0/openhpid/openhpid-posix.cpp
===================================================================
--- openhpi-3.8.0.orig/openhpid/openhpid-posix.cpp	2018-09-19 22:47:00.000000000 +0200
+++ openhpi-3.8.0/openhpid/openhpid-posix.cpp	2018-09-25 11:47:01.165511254 +0200
@@ -439,6 +439,7 @@ int main(int argc, char *argv[])
     INFO("Socket timeout(sec): %d.", sock_timeout);
 
     if (oh_init()) { // Initialize OpenHPI
+	unlink(pidfile);
         CRIT("There was an error initializing OpenHPI. Exiting.");
         return 8;
     }