Load faulthandler module only for dev build

gns3server/crash_report.py

@@ -19,7 +19,6 @@ import os
 import sys
 import struct
 import platform
-import faulthandler
 
 
 try:
@@ -38,6 +37,8 @@ log = logging.getLogger(__name__)
 
 # Dev build
 if __version__[4] != 0:
+    import faulthandler
+
     # Display a traceback in case of segfault crash. Usefull when frozen
     # Not enabled by default for security reason
     log.info("Enable catching segfault")