[fusl] clang-format fusl

fusl/src/locale/uselocale.c

 #include "locale_impl.h"
 #include "pthread_impl.h"
 #include "libc.h"
 
-locale_t __uselocale(locale_t new)
-{
-        pthread_t self = __pthread_self();
-        locale_t old = self->locale;
-        locale_t global = &libc.global_locale;
+locale_t __uselocale(locale_t new) {
+  pthread_t self = __pthread_self();
+  locale_t old = self->locale;
+  locale_t global = &libc.global_locale;
 
-        if (new) self->locale = new == LC_GLOBAL_LOCALE ? global : new;
+  if (new)
+    self->locale = new == LC_GLOBAL_LOCALE ? global : new;
 
-        return old == global ? LC_GLOBAL_LOCALE : old;
+  return old == global ? LC_GLOBAL_LOCALE : old;
 }
 
 weak_alias(__uselocale, uselocale);