realloc bug: fix #3953 (#3957)

d-a-v · devyte · commit cb723a59603d · 2017-12-13T10:30:33.000-03:00
fix #3699
diff --git a/cores/esp8266/umm_malloc/umm_malloc.c b/cores/esp8266/umm_malloc/umm_malloc.c
@@ -1632,9 +1632,9 @@ static void *_umm_realloc( void *ptr, size_t size ) {
 
     if( (ptr = _umm_malloc( size )) ) {
       memcpy( ptr, oldptr, curSize );
+      _umm_free( oldptr );
     }
 
-    _umm_free( oldptr );
   }
 
   /* Release the critical section... */

Original file line number	Diff line number	Diff line change
`@@ -1632,9 +1632,9 @@ static void _umm_realloc( void ptr, size_t size ) {`
`1632`	`1632`
`1633`	`1633`	`if( (ptr = _umm_malloc( size )) ) {`
`1634`	`1634`	`memcpy( ptr, oldptr, curSize );`
	`1635`	`+ _umm_free( oldptr );`
`1635`	`1636`	`}`
`1636`	`1637`
`1637`		`- _umm_free( oldptr );`
`1638`	`1638`	`}`
`1639`	`1639`
`1640`	`1640`	`/* Release the critical section... */`