[fusl] clang-format fusl

fusl/src/unistd/dup3.c

 #define _GNU_SOURCE
 #include <unistd.h>
 #include <errno.h>
 #include <fcntl.h>
 #include "syscall.h"
 #include "libc.h"
 
-int __dup3(int old, int new, int flags)
-{
-        int r;
+int __dup3(int old, int new, int flags) {
+  int r;
 #ifdef SYS_dup2
-        if (old==new) return __syscall_ret(-EINVAL);
-        if (flags & O_CLOEXEC) {
-                while ((r=__syscall(SYS_dup3, old, new, flags))==-EBUSY);
-                if (r!=-ENOSYS) return __syscall_ret(r);
-        }
-        while ((r=__syscall(SYS_dup2, old, new))==-EBUSY);
-        if (flags & O_CLOEXEC) __syscall(SYS_fcntl, new, F_SETFD, FD_CLOEXEC);
+  if (old == new)
+    return __syscall_ret(-EINVAL);
+  if (flags & O_CLOEXEC) {
+    while ((r = __syscall(SYS_dup3, old, new, flags)) == -EBUSY)
+      ;
+    if (r != -ENOSYS)
+      return __syscall_ret(r);
+  }
+  while ((r = __syscall(SYS_dup2, old, new)) == -EBUSY)
+    ;
+  if (flags & O_CLOEXEC)
+    __syscall(SYS_fcntl, new, F_SETFD, FD_CLOEXEC);
 #else
-        while ((r=__syscall(SYS_dup3, old, new, flags))==-EBUSY);
+  while ((r = __syscall(SYS_dup3, old, new, flags)) == -EBUSY)
+    ;
 #endif
-        return __syscall_ret(r);
+  return __syscall_ret(r);
 }
 
 weak_alias(__dup3, dup3);