Add back get_uinteger for boolean_type.

This was removed in ed0b19b

Change-Id: I548ca955eda6e0b6991a0f6731cbbb3bf82e0e2b
Reviewed-on: https://code.wireshark.org/review/4620
Reviewed-by: Stig Bjørlykke <stig@bjorlykke.org>
Tested-by: Stig Bjørlykke <stig@bjorlykke.org>

epan/ftypes/ftype-integer.c

@@ -1094,7 +1094,7 @@ ftype_register_integers(void)
 		NULL,				/* set_value_floating */
 
 		NULL,				/* get_value */
-		NULL,				/* get_value_uinteger */
+		get_uinteger,			/* get_value_uinteger */
 		NULL,				/* get_value_sinteger */
 		get_integer64,			/* get_value_integer64 */
 		NULL,				/* get_value_floating */