Patch by Sergei Golovan (Debian) to fix the compiler warnings about implicit fall-through
in case.

--- tcltls-1.7.22/tlsBIO.c				2020-10-12 22:39:22.000000000 +0200
+++ tcltls-1.7.22/tlsBIO.c.fall-through			2022-05-28 21:25:07.516152714 +0200
@@ -231,9 +231,12 @@
 	switch (cmd) {
 		case BIO_CTRL_RESET:
 			dprintf("Got BIO_CTRL_RESET");
-			num = 0;
+			ret = 0;
+			break;
 		case BIO_C_FILE_SEEK:
 			dprintf("Got BIO_C_FILE_SEEK");
+			ret = 0;
+			break;
 		case BIO_C_FILE_TELL:
 			dprintf("Got BIO_C_FILE_TELL");
 			ret = 0;
--- tcltls-1.7.22/tls.c					2020-10-12 22:39:22.000000000 +0200
+++ tcltls-1.7.22/tls.c.fall-through			2022-05-28 21:25:07.515152707 +0200
@@ -1424,7 +1424,7 @@
 		channelName = Tcl_GetStringFromObj(objv[2], NULL);
 		break;
 	    }
-	    /* else fall... */
+	    /* else fall-through ... */
 	default:
 	    Tcl_WrongNumArgs(interp, 1, objv, "?-local? channel");
 	    return TCL_ERROR;