BSSGP_Emulation: Fix ttcn3 runtime warning

Should fix following TTCN3 warning during runtime of
PCU_Tests.TC_pcuif_suspend:
"""
BSSGP_Emulation.ttcnpp:462 Timeout operation on timer g_T2 failed: The timer is not started.
"""

Change-Id: Ic74572a21b5abee8e530741466360ff7e16a357d
diff --git a/library/BSSGP_Emulation.ttcnpp b/library/BSSGP_Emulation.ttcnpp
index 23c8d03..e0b5dee 100644
--- a/library/BSSGP_Emulation.ttcnpp
+++ b/library/BSSGP_Emulation.ttcnpp
@@ -459,7 +459,7 @@
 			}
 		}
 	}
-	[] g_T2.timeout {
+	[g_T2.running] g_T2.timeout {
 		setverdict(fail, "Timeout waiting for BVC-RESET-ACK on BVCI=0");
 		BSCP.send(f_BnsUdReq(ts_BSSGP_STATUS(udi.bvci, BSSGP_CAUSE_BVCI_UNKNOWN, udi.bssgp), 0, 0));
 		g_T2.start;