DISMAN-EVENT-MIB: Initialize 'name' and 'name_buf'

This patch suppresses the following two Coverity reports:

CID 407579:  Uninitialized variables  (UNINIT)
Using uninitialized value "*name_buf" when calling "memcpy". [Note: The source code implementation of the function has been overridden by a builtin model.]

CID 407578:  Uninitialized variables  (UNINIT)
Using uninitialized value "name_buf_len".

Author: bvanassche

agent/mibgroup/disman/event/mteTriggerConf.c

@@ -166,8 +166,8 @@ parse_mteMonitor(const char *token, const char *line)
 
     int    seen_name = 0;
     char   oid_name_buf[SPRINT_MAX_LEN];
-    oid    name_buf[MAX_OID_LEN];
-    size_t name_buf_len;
+    oid    name_buf[MAX_OID_LEN] = { };
+    size_t name_buf_len = 0;
     u_char op    = 0;
     long   value = 0;