fixed bug in movements.c

maca_trans_parser/src/movements.c

@@ -20,7 +20,8 @@ int movement_left_arc(config *c, int movement_code, int label)
   word_set_gov(dep, dist);
   word_set_label(dep, label);
 
-  gov->lspan = dep->lspan;
+  if(gov && dep)
+    gov->lspan = dep->lspan;
   
   config_push_mvt(c, movement_code, gov, dep);
 
@@ -57,7 +58,8 @@ int movement_right_arc(config *c, int movement_code, int label)
   word_set_gov(dep, dist);
   word_set_label(dep, label);
 
-  gov->rspan = dep->rspan;
+  if(gov && dep)
+    gov->rspan = dep->rspan;
 
   
   stack_push(config_get_stack(c), word_buffer_b0(config_get_buffer(c)));