Corrected a small issue in the "property" command that will attempt

to free memory from location 0 if the cell is not editable.

VERSION

@@ -1 +1 @@
-8.3.266
+8.3.267

database/DBprop.c

@@ -64,7 +64,8 @@ DBPropPut(cellDef, name, value)
 
     if (cellDef->cd_flags & CDNOEDIT)
     {
-	freeMagic((char *)value);
+	if (value != (ClientData)NULL)
+	    freeMagic((char *)value);
 	return;
     }