malloc_heap_end align margin to malloc

Author: feilipu

library.properties

@@ -1,5 +1,5 @@
 name=FreeRTOS
-version=10.3.0-4
+version=10.3.0-5
 author=Richard Barry <info@freertos.org>
 maintainer=Phillip Stevens <phillip.stevens@gmail.com>
 sentence=Real Time Operating System implemented for AVR (Uno, Leonardo, Mega).

src/variantHooks.cpp

@@ -46,16 +46,16 @@ extern void loop(void);
 void initVariant(void) __attribute__ ((OS_main));
 void initVariant(void)
 {
-    // as the Task stacks are usually on heap before memory within the task, the normal
-    // __malloc_heap_end = 0 doesn't work. Allow for a minimal initial stack only.
-    __malloc_heap_end = (char *)(RAMEND - configMINIMAL_STACK_SIZE);
+    // As the Task stacks are on heap before Task allocated heap variables,
+    // the library default __malloc_heap_end = 0 doesn't work.
+    __malloc_heap_end = (char *)(RAMEND - __malloc_margin);
 
 #if defined(USBCON)
     USBDevice.attach();
 #endif
 
-    setup();        // the normal Arduino setup() function is run here.
-    vTaskStartScheduler(); // initialise and run the freeRTOS scheduler. Execution should never return here.
+    setup();                    // the normal Arduino setup() function is run here.
+    vTaskStartScheduler();      // initialise and run the freeRTOS scheduler. Execution should never return here.
 }
 
 
@@ -73,7 +73,7 @@ void vApplicationIdleHook( void ) __attribute__((weak));
 
 void vApplicationIdleHook( void )
 {
-    loop();        // the normal Arduino loop() function is run here.
+    loop();                     // the normal Arduino loop() function is run here.
     if (serialEventRun) serialEventRun();
 }