Fix file descriptor leaks on arm Android

* exec/loader-aarch64.s (_start):

* exec/loader-armeabi.s (_start): Fix thinko.
Do not merge to master.

exec/loader-aarch64.s

@@ -168,7 +168,7 @@ _start:
 	b	.one_auxv
 .cleanup:
 	cmp	x28, #-1		// is secondary fd set?
-	bne	.cleanup1		// not set
+	beq	.cleanup1		// not set
 	mov	x8, #57			// SYS_close
 	mov	x0, x28			// secondary fd
 	svc	#0			// syscall

exec/loader-armeabi.s

@@ -181,7 +181,7 @@ _start:
 	b	.one_auxv
 .cleanup:
 	cmp	r14, #-1		@ secondary fd set?
-	bne	.cleanup1		@ not set
+	beq	.cleanup1		@ not set
 	mov	r7, #6			@ SYS_close
 	mov	r0, r14			@ secondary fd
 	swi	#0			@ syscall