[PATCH] Try to fix ipc_net_plmn_sel segmentation fault.

[Denis 'GNUtoo' Carikli]

From: Paul Kocialkowski <contact at paulk.fr>

Without that fix we have:
  I/DEBUG   ( 2256):          #00  pc 0000ed68  /system/lib/libsamsung-ril.so (ipc_net_plmn_sel)
  I/DEBUG   ( 2256):          #01  pc 0000bdfa  /system/lib/libsamsung-ril.so (ipc_fmt_dispatch)
  I/DEBUG   ( 2256):          #02  pc 0000c6f6  /system/lib/libsamsung-ril.so (ipc_fmt_read_loop)
  I/DEBUG   ( 2256):          #03  pc 0000bff4  /system/lib/libsamsung-ril.so (ril_client_thread)
  I/DEBUG   ( 2256):          #04  pc 00012e2c  /system/lib/libc.so (__thread_entry)
  I/DEBUG   ( 2256):          #05  pc 0001295c  /system/lib/libc.so (pthread_create)

Signed-off-by: Paul Kocialkowski <contact at paulk.fr>
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo at no-log.org>
---
 net.c |   10 +++++++---
 1 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/net.c b/net.c
index e19fb5f..eecdfc6 100644
--- a/net.c
+++ b/net.c
@@ -795,10 +795,14 @@ void ril_request_query_network_selection_mode(RIL_Token t)
 
 void ipc_net_plmn_sel(struct ipc_message_info *info)
 {
-	struct ipc_net_plmn_sel_get *plmn_sel = (struct ipc_net_plmn_sel_get *) info->data;
-	int ril_mode = ipc2ril_plmn_sel(plmn_sel->plmn_sel);
+	struct ipc_net_plmn_sel_get *plmn_sel;
+	int ril_mode;
 
-	RIL_onRequestComplete(reqGetToken(info->aseq), RIL_E_SUCCESS, &ril_mode, sizeof(int));
+	if (info->data != NULL && info->length >= sizeof(struct ipc_net_plmn_sel_get)) {
+		plmn_sel = (struct ipc_net_plmn_sel_get *) info->data;
+		ril_mode = ipc2ril_plmn_sel(plmn_sel->plmn_sel);
+		RIL_onRequestComplete(reqGetToken(info->aseq), RIL_E_SUCCESS, &ril_mode, sizeof(int));
+	}
 }
 
 void ipc_net_plmn_sel_complete(struct ipc_message_info *info)
-- 
1.7.5.4