Fix debug print warnings on ESP32

Author: willmmiles

src/AsyncWebSocket.cpp

@@ -30,7 +30,7 @@
 #endif
 
 #ifdef ASYNCWEBSERVER_DEBUG_TRACE
-#define DEBUG_PRINTFP(fmt, ...) Serial.printf_P(PSTR("[%d]{%d}" fmt "\n"), millis(), ESP.getFreeHeap(), ##__VA_ARGS__)
+#define DEBUG_PRINTFP(fmt, ...) Serial.printf_P(PSTR("[%u]{%d}" fmt "\n"), (unsigned) millis(), ESP.getFreeHeap(), ##__VA_ARGS__)
 #else
 #define DEBUG_PRINTFP(...)
 #endif

src/WebRequest.cpp

@@ -33,7 +33,7 @@ static const String SharedEmptyString = String();
 enum { PARSE_REQ_START, PARSE_REQ_HEADERS, PARSE_REQ_BODY, PARSE_REQ_END, PARSE_REQ_FAIL };
 
 #ifdef ASYNCWEBSERVER_DEBUG_TRACE
-#define DEBUG_PRINTFP(fmt, ...) Serial.printf_P(PSTR("[%d]{%d}" fmt "\n"), millis(), ESP.getFreeHeap(), ##__VA_ARGS__)
+#define DEBUG_PRINTFP(fmt, ...) Serial.printf_P(PSTR("[%u]{%d}" fmt "\n"), (unsigned) millis(), ESP.getFreeHeap(), ##__VA_ARGS__)
 #else
 #define DEBUG_PRINTFP(...)
 #endif

src/WebResponses.cpp

@@ -23,7 +23,7 @@
 #include "cbuf.h"
 
 #ifdef ASYNCWEBSERVER_DEBUG_TRACE
-#define DEBUG_PRINTFP(fmt, ...) Serial.printf_P(PSTR("[%d]" fmt), millis(), ##__VA_ARGS__)
+#define DEBUG_PRINTFP(fmt, ...) Serial.printf_P(PSTR("[%u]" fmt), (unsigned) millis(), ##__VA_ARGS__)
 #else
 #define DEBUG_PRINTFP(...)
 #endif