(svn r22337) -Fix: Overly specific error message

src/lang/english.txt

@@ -3736,7 +3736,7 @@ STR_ERROR_VEHICLE_IS_DESTROYED                                  :{WHITE}... vehi
 # Specific vehicle errors
 STR_ERROR_CAN_T_MAKE_TRAIN_PASS_SIGNAL                          :{WHITE}Can't make train pass signal at danger...
 STR_ERROR_CAN_T_REVERSE_DIRECTION_TRAIN                         :{WHITE}Can't reverse direction of train...
-STR_ERROR_TRAIN_START_NO_CATENARY                               :This track lacks catenary, so the train can't start
+STR_ERROR_TRAIN_START_NO_POWER                                  :Train has no power
 
 STR_ERROR_CAN_T_MAKE_ROAD_VEHICLE_TURN                          :{WHITE}Can't make road vehicle turn around...
 

src/vehicle_cmd.cpp

@@ -416,7 +416,7 @@ CommandCost CmdStartStopVehicle(TileIndex tile, DoCommandFlag flags, uint32 p1,
 
 	switch (v->type) {
 		case VEH_TRAIN:
-			if ((v->vehstatus & VS_STOPPED) && Train::From(v)->gcache.cached_power == 0) return_cmd_error(STR_ERROR_TRAIN_START_NO_CATENARY);
+			if ((v->vehstatus & VS_STOPPED) && Train::From(v)->gcache.cached_power == 0) return_cmd_error(STR_ERROR_TRAIN_START_NO_POWER);
 			break;
 
 		case VEH_SHIP: