Cleared a null pointer that was causing seg fault.

Author: vincelasal

ODIN_II/SRC/output_blif.c

@@ -623,22 +623,25 @@ void define_set_input_logical_function(nnode_t *node, const char *bit_output, FI
 		/* printout all the port hookups */
 		for (i = 0; i < node->num_input_pins; i++)
 		{
-			if (node->input_pins[i]->net->driver_pin->name != NULL)
+			if (node->input_pins[i]->net->driver_pin != NULL)
 			{
-				/* now hookup the input wires with their respective ports.  [1+i] to skip output spot. */
-				/* Just print the driver_pin->name NOT driver_pin->node->name -- KEN */
-				if ((node->input_pins[i]->net->driver_pin->node->type == MULTIPLY) ||
-			    	   (node->input_pins[i]->net->driver_pin->node->type == HARD_IP) ||
-			    	   (node->input_pins[i]->net->driver_pin->node->type == MEMORY) ||
-			    	   (node->input_pins[i]->net->driver_pin->node->type == ADD) ||
-			    	   (node->input_pins[i]->net->driver_pin->node->type == MINUS))
+				if (node->input_pins[i]->net->driver_pin->name != NULL)
 				{
-					fprintf(out, " %s", node->input_pins[i]->net->driver_pin->name); 
+					/* now hookup the input wires with their respective ports.  [1+i] to skip output spot. */
+					/* Just print the driver_pin->name NOT driver_pin->node->name -- KEN */
+					if ((node->input_pins[i]->net->driver_pin->node->type == MULTIPLY) ||
+			    	 	  (node->input_pins[i]->net->driver_pin->node->type == HARD_IP) ||
+			    	   	(node->input_pins[i]->net->driver_pin->node->type == MEMORY) ||
+			    	   	(node->input_pins[i]->net->driver_pin->node->type == ADD) ||
+			    	   	(node->input_pins[i]->net->driver_pin->node->type == MINUS))
+					{
+						fprintf(out, " %s", node->input_pins[i]->net->driver_pin->name); 
+					}
+				}
+				else
+				{
+					fprintf(out, " %s", node->input_pins[i]->net->driver_pin->node->name); 
 				}
-			}
-			else
-			{
-				fprintf(out, " %s", node->input_pins[i]->net->driver_pin->node->name); 
 			}
 		}