[libs] Fix SerialClass available() return value (#173)

Co-authored-by: descipher <[email protected]>
libretiny-eu · Sep 21, 2023 · 3b79636 · 3b79636
1 parent 5a4b932
commit 3b79636
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/cores/common/arduino/libraries/api/Serial/Serial.cpp b/cores/common/arduino/libraries/api/Serial/Serial.cpp
@@ -24,7 +24,7 @@ void SerialClass::adrParse(uint8_t c) {
 #endif
 
 int SerialClass::available() {
-	return this->buf && this->buf->available();
+	return this->buf ? this->buf->available() : 0;
 }
 
 int SerialClass::peek() {