fix umm_malloc null ptr.

(endless reboot) like: ``` Fatal exception (28): epc1=0x402097e8, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000001, depc=0x00000000 Fatal exception (28): epc1=0x402097e8, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000001, depc=0x00000000 Fatal exception (28): epc1=0x402097e8, epc2=0x00000000, epc3=0x00000000, excvaddr=0x00000001, depc=0x00000000 ``` ``` 0x402097e8: umm_info at umm_malloc/umm_malloc.c line 1000 ```
sam642 · Mar 8, 2016 · f8f0001 · f8f0001
1 parent d2d1ca2
commit f8f0001
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/cores/esp8266/umm_malloc/umm_malloc.c b/cores/esp8266/umm_malloc/umm_malloc.c
@@ -971,6 +971,10 @@ void ICACHE_FLASH_ATTR *umm_info( void *ptr, int force ) {
 
   unsigned short int blockNo = 0;
 
+  if (umm_heap == NULL) {
+      umm_init();
+  }
+
   /* Protect the critical section... */
   UMM_CRITICAL_ENTRY();