cstartup: (re-)enable interrupts before calling main()

firmware/libboard/common/source/board_cstartup_gnu.c

@@ -184,12 +184,12 @@ void ResetException( void )
 	    SCB->VTOR |= 1 << SCB_VTOR_TBLBASE_Pos ;
     }
 
-    /* Branch to main function */
-    main() ;
-
     /* App should have disabled interrupts during the transition */
     __enable_irq();
 
+    /* Branch to main function */
+    main() ;
+
     /* Infinite loop */
     while ( 1 ) ;
 }