[Bugfix][108][bug-view-1728][voice] sometims, dial voice number will have a new unexpected plus number

 Only Configure:No
 Affected branch:Na
 Affected module:voice
 Is it affected on:only asr
 Self-test:Yes
 Doc Update:No

Change-Id: I6580b62c685f16ab4dba73513f072a1c4363148f
diff --git a/mbtk/libmbtk_lib/ril/v1/mbtk_info_api.c b/mbtk/libmbtk_lib/ril/v1/mbtk_info_api.c
index 8a00638..8e9db1f 100644
--- a/mbtk/libmbtk_lib/ril/v1/mbtk_info_api.c
+++ b/mbtk/libmbtk_lib/ril/v1/mbtk_info_api.c
@@ -2371,7 +2371,7 @@
         return -1;
 
     return info_item_process(handle, MBTK_INFO_ID_CALL_START_REQ,
-            phone_number, strlen(phone_number), NULL) ? handle->info_err : 0;
+            phone_number, strlen(phone_number)+1, NULL) ? handle->info_err : 0;
 }
 /*
 * Answer the phone call.