fix build warning, if jswrap_i2c_readReg called on an undefined paren…

…t it could return an undefined value
espruino · Jan 25, 2024 · e3736ac · e3736ac
1 parent ddd7ad7
commit e3736ac
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/jswrap_spi_i2c.c b/src/jswrap_spi_i2c.c
@@ -761,10 +761,10 @@ I2C.readReg = function(address, reg, quantity) {
 ```
  */
 JsVar *jswrap_i2c_readReg(JsVar *parent, int address, int reg, int nBytes) {
-  if (!jsvIsObject(parent)) return;
+  if (!jsvIsObject(parent)) return 0;
   IOEventFlags device = jsiGetDeviceFromClass(parent);
   bool sendStop = false;
   unsigned char i2cReg = (unsigned char)reg;
   _jswrap_i2c_writeTo(parent, device, address, sendStop, 1, &i2cReg);
   return _jswrap_i2c_readFrom(parent, device, address, sendStop, nBytes);
-}
+}