lib/kmi: use system malloc for MI operations

lib/kmi/Makefile

@@ -4,8 +4,9 @@ NAME:=kmi
 MAJOR_VER=1
 MINOR_VER=0
 BUGFIX_VER=0
-## uncomment next line for using system malloc with MI
-#DEFS+= -DMI_SYSTEM_MALLOC
+## comment next line for using internal pkg malloc with MI
+## - when MI_SYSTEM_MALLOC is defined, OS malloc is used
+DEFS+= -DMI_SYSTEM_MALLOC
 LIBS=
 
 include ../../Makefile.libs