WiFiClient::peek should return -1 instead of 0

blue-2357 · blue-2357 · commit 672d87f31a6c · 2017-05-06T18:30:38.000+03:00
Fixes: espressif/arduino-esp32#329
diff --git a/libraries/WiFi/src/WiFiClient.h b/libraries/WiFi/src/WiFiClient.h
@@ -49,7 +49,7 @@ class WiFiClient : public Client
     int read(uint8_t *buf, size_t size);
     int peek()
     {
-        return 0;
+        return -1;
     }
     void flush();
     void stop();

Original file line number	Diff line number	Diff line change
`@@ -49,7 +49,7 @@ class WiFiClient : public Client`
`49`	`49`	`int read(uint8_t *buf, size_t size);`
`50`	`50`	`int peek()`
`51`	`51`	`{`
`52`		`- return 0;`
	`52`	`+ return -1;`
`53`	`53`	`}`
`54`	`54`	`void flush();`
`55`	`55`	`void stop();`