[Bugfix][T106BUG-407][T106BUG-406]fix apn_xml_modify Segmentation fault

Only Configure: No
Affected branch: master
Affected module: data
Is it affected on both ZXIC and MTK: only ZXIC
Self-test: Yes
Doc Update: No

Change-Id: I42ea79ecda0a085f421f45bfcafaf65446d69919
1 file changed