Index: calay.c
===================================================================
--- calay.c	(revision 22129)
+++ calay.c	(revision 22130)
@@ -144,7 +144,7 @@
 		refdes = strpbrk(val, " \t\r\n");
 		if (refdes == NULL)
 			continue;
-		*refdes = NULL;
+		*refdes = 0;
 		refdes++;
 		ltrim(refdes);
 
@@ -151,7 +151,7 @@
 		footprint = strpbrk(refdes, " \t\r\n");
 		if (footprint == NULL)
 			continue;
-		*footprint = NULL;
+		*footprint = 0;
 		footprint++;
 		ltrim(footprint);