[Bugfix][L805A-6] solve lynq_get_current_call_state_ext get slot failed after hungup current call

Only Configure:No
Affected branch:DSDS
Affected module:CALL
Is it affected on both ZXIC and MTK: NO
Self-test: Yes
Doc Update:No

Change-Id: I020c2038a35a0029ead6cfd784d1c026d3e0a703
diff --git a/common_src/lib/liblynq-call/lynq_call.cpp b/common_src/lib/liblynq-call/lynq_call.cpp
index 7ce1d26..d4d57d2 100755
--- a/common_src/lib/liblynq-call/lynq_call.cpp
+++ b/common_src/lib/liblynq-call/lynq_call.cpp
@@ -1237,6 +1237,7 @@
         if((*handle) >= 0)

         {

             *call_state = (int)LYNQ_CALL_END;

+            *slot = global_slot;

             return RESULT_OK; 

         }

         else