Fix EOF test for web workflow repl

jepler · jepler · commit 57638449d6d9 · 2025-03-26T12:31:55.000-05:00
diff --git a/supervisor/shared/serial.c b/supervisor/shared/serial.c
@@ -298,7 +298,7 @@ char serial_read(void) {
 
     #if CIRCUITPY_WEB_WORKFLOW
     if (websocket_available()) {
-        char c = websocket_read_char();
+        int c = websocket_read_char();
         if (c != -1) {
             return c;
         }
