RDKEMW-10247 : "btMgrBus" crash with function "BtrCore_BTGetPairedDeviceInfo

Reason for change: Add defensive NULL check for interface handle in DBus message creation
Priority: P1

Test Procedure: Follow the steps provided in description.
Risks:Low

Author: natrajmuthusamy

conf/include/generic-srcrev.inc

@@ -14,7 +14,7 @@ SRCREV:pn-iarmmgrs = "e9a897772fce3f666a86271267e3843effac2ffc"
 SRCREV:pn-rdk-gstreamer-utils = "f6e7e0c0e09e67785d0c59531719b970bbe32c86"
 SRCREV_devicesettings = "6ccd7f98aac3f5a50187a8256179eb3e515537a9"
 SRCREV:pn-bluetooth-mgr = "31490a0a5a7b89a313d92c2b1f0a22bbac92369f"
-SRCREV:pn-bluetooth-core = "fcb8c3ab78f8f4cbeb3980b812e85ed5031004d5"
+SRCREV:pn-bluetooth-core = "1a996b5bfec423e1994af192a71a0727f2e0518e"
 SRCREV_rdmgeneric = "3ae2700d6dd44ae04406180dca94b3f87fdf23e5"
 SRCREV_rdkversion = "d461bbd2fc8299f6e5056f488ff944e90142e9b6"
 SRCREV:pn-telemetry = "2f0cb8c011d03d8ce8eb36f97be6d505989dafa1"