fix some indention-with-spaces that crept in

src/linux/dup3.c

@@ -4,7 +4,7 @@
 #include "syscall.h"
 
 int dup3(int old, int new, int flags) {
-        int r;
+	int r;
-        while ((r=__syscall(SYS_dup3, old, new, flags))==-EBUSY);
+	while ((r=__syscall(SYS_dup3, old, new, flags))==-EBUSY);
-        return __syscall_ret(r);
+	return __syscall_ret(r);
 }

src/linux/setns.c

@@ -5,5 +5,5 @@
 
 int setns(int fd, int nstype)
 {
-        return syscall(SYS_setns, fd, nstype);
+	return syscall(SYS_setns, fd, nstype);
 }

src/thread/x86_64/__set_thread_area.s

@@ -3,8 +3,8 @@
 .global __set_thread_area
 .type __set_thread_area,@function
 __set_thread_area:
-        mov %rdi,%rsi           /* shift for syscall */
+	mov %rdi,%rsi           /* shift for syscall */
-        movl $0x1002,%edi       /* SET_FS register */
+	movl $0x1002,%edi       /* SET_FS register */
-        movl $158,%eax          /* set fs segment to */
+	movl $158,%eax          /* set fs segment to */
-        syscall                 /* arch_prctl(SET_FS, arg)*/
+	syscall                 /* arch_prctl(SET_FS, arg)*/
 	ret

src/unistd/acct.c

@@ -5,5 +5,5 @@
 
 int acct(const char *filename)
 {
-        return syscall(SYS_acct, filename);
+	return syscall(SYS_acct, filename);
 }