Modified a routine to return a valid string when attempting to

generate a name for an instance that is set to NULL.  It is not
clear to me by an instance would have a NULL name, but apparently
it can happen, and should not crash magic.

VERSION

@@ -1 +1 @@
-8.3.513
+8.3.514

database/DBcellname.c

@@ -391,6 +391,12 @@ dbGetUseName(celluse)
     ybuf[0] = '\0';
 
     useID = celluse->cu_id;
+    if (useID == NULL)
+    {
+	newID = (char *)mallocMagic(7);
+	sprintf(newID, "(null)");
+	return (newID);
+    }
     newsize = strlen(useID) + 1;
     if (isx || isy)
     {