ignore return code for portability

See https://github.com/CCI/cci/issues/45
and
https://github.com/CCI/cci/pull/49

packages/cci/cci-rdma-destroy-ep.patch

+diff --git a/src/plugins/ctp/verbs/ctp_verbs_api.c b/src/plugins/ctp/verbs/ctp_verbs_api.c
+index 06da1f4..e187ebd 100644
+--- a/src/plugins/ctp/verbs/ctp_verbs_api.c
++++ b/src/plugins/ctp/verbs/ctp_verbs_api.c
+@@ -2982,12 +2982,7 @@ verbs_handle_disconnected(cci__ep_t * ep, struct rdma_cm_event *cm_evt)
+ 	/* Either way, we got the DISCONNECTED event, it is safe to cleanup
+ 	 * the QP and CM id.
+ 	 */
+-	ret = rdma_destroy_ep(vconn->id);
+-	if (ret == -1) {
+-		ret = errno;
+-		debug(CCI_DB_WARN, "%s: rdma_destroy_ep() returned %s",
+-		      __func__, strerror(ret));
+-	}
++	rdma_destroy_ep(vconn->id);
+ 
+ 	if (!vconn->cci_disconn) {
+ 		verbs_destroy_conn(ep, conn);

packages/cci/package.py

@@ -42,6 +42,8 @@ class Cci(AutotoolsPackage):
     depends_on('libtool', type='build', when='@master');
 
     patch('0001-Werror-is-a-little-aggressive.patch');
+    # some libverbs libraries return 'void' instead of a value
+    patch('cci-rdma-destroy-ep.patch');
 
     version('master', git='https://github.com/CCI/cci.git')
     version('2.0', '070b2ba4eca92a846c093f2cd000d3b2')