Fix __malloc_lock/unlock prototype change in newlib

Signed-off-by: Frederic Pillon <[email protected]>

Author: fpistm

portable/MemMang/heap_useNewlib.c

@@ -109,8 +109,13 @@ char * sbrk(int incr) {
 //! Synonym for sbrk.
 char * _sbrk(int incr) { return sbrk(incr); };
 
+#if (__NEWLIB__ >= 3)
+void __malloc_lock(struct _reent *ptr __attribute__((__unused__)))     {       vTaskSuspendAll(); };
+void __malloc_unlock(struct _reent *ptr __attribute__((__unused__)))   { (void)xTaskResumeAll();  };
+#else
 void __malloc_lock()     {       vTaskSuspendAll(); };
 void __malloc_unlock()   { (void)xTaskResumeAll();  };
+#endif
 
 // newlib also requires implementing locks for the application's environment memory space,
 // accessed by newlib's setenv() and getenv() functions.