Add null pointer test to String destructor

jrowberg · aentinger · commit 590b21b75307 · 2019-09-16T16:00:56.000+02:00
diff --git a/cores/arduino/WString.cpp b/cores/arduino/WString.cpp
@@ -123,7 +123,7 @@ String::String(double value, unsigned char decimalPlaces)
 
 String::~String()
 {
-	free(buffer);
+	if (buffer) free(buffer);
 }
 
 /*********************************************/

Original file line number	Diff line number	Diff line change
`@@ -123,7 +123,7 @@ String::String(double value, unsigned char decimalPlaces)`
`123`	`123`
`124`	`124`	`String::~String()`
`125`	`125`	`{`
`126`		`- free(buffer);`
	`126`	`+ if (buffer) free(buffer);`
`127`	`127`	`}`
`128`	`128`
`129`	`129`	`/*********************************************/`