Configure and test modification for better Freebsd port

lib/clixon/clixon.h.in

@@ -48,6 +48,7 @@
 #include <netinet/in.h>
 #include <sys/time.h> /* gettimeofday */
 #include <sys/types.h>
+#include <sys/param.h> /* MAXPATHLEN */
 
 /*
  * CLIXON version macros

lib/clixon/clixon_plugin.h

@@ -180,7 +180,7 @@ typedef struct clixon_plugin_api* (plginit2_t)(clicon_handle);    /* Clixon plug
 
 struct clixon_plugin_api{
     /*--- Common fields.  ---*/
-    char              ca_name[PATH_MAX]; /* Name of plugin (given by plugin) */
+    char              ca_name[MAXPATHLEN]; /* Name of plugin (given by plugin) */
     plginit2_t       *ca_init;           /* Clixon plugin Init (implicit) */
     plgstart_t       *ca_start;          /* Plugin start */
     plgexit_t        *ca_exit;	         /* Plugin exit */
@@ -235,7 +235,7 @@ typedef struct clixon_plugin_api clixon_plugin_api;
 /* Internal plugin structure with dlopen() handle and plugin_api
  */
 struct clixon_plugin{
-    char              cp_name[PATH_MAX]; /* Plugin filename. Note api ca_name is given by plugin itself */
+    char              cp_name[MAXPATHLEN]; /* Plugin filename. Note api ca_name is given by plugin itself */
     plghndl_t         cp_handle;  /* Handle to plugin using dlopen(3) */
     clixon_plugin_api cp_api;
 };

lib/src/clixon_plugin.c

@@ -509,7 +509,7 @@ rpc_callback_register(clicon_handle  h,
     		      char          *namespace,
 		      char          *name)
 {
-    rpc_callback_t *rc;
+    rpc_callback_t *rc = NULL;
 
     if (name == NULL || namespace == NULL){
 	clicon_err(OE_DB, EINVAL, "name or namespace NULL");

lib/src/clixon_yang_module.c

@@ -55,6 +55,7 @@
 #include <assert.h>
 #include <sys/stat.h>
 #include <netinet/in.h>
+#include <sys/param.h>
 
 /* cligen */
 #include <cligen/cligen.h>

lib/src/clixon_yang_type.c

@@ -78,6 +78,7 @@
 #include <assert.h>
 #include <regex.h>
 #include <netinet/in.h>
+#include <sys/param.h>
 
 /* cligen */
 #include <cligen/cligen.h>