fix an ancient bug (typo `!=' versus `=!')

ChangeLog

@@ -1,3 +1,7 @@
+2010-11-23  Robert Larice
+ * src/xspice/ipc/ipcaegis.c :
+    fix an ancient bug (typo `!=' versus `=!')
+
 2010-11-23  Robert Larice
  * src/spicelib/analysis/cktsopt.c ,
  * src/spicelib/analysis/dctrcurv.c ,

src/xspice/ipc/ipcaegis.c

@@ -254,8 +254,8 @@ Ipc_Status_t ipc_transport_terminate_server ()
 
    do {
       status = ipc_transport_get_line (buffer, &len, IPC_WAIT);
-   } while ((status =! IPC_STATUS_ERROR) &&
-	    (status =! IPC_STATUS_EOF));
+   } while ((status != IPC_STATUS_ERROR) &&
+	    (status != IPC_STATUS_EOF));
    return status;
 }