py: Adjust some spaces in code style/format, purely for consistency.
diff --git a/py/unicode.c b/py/unicode.c
index a83e3ac..db4aa43 100644
--- a/py/unicode.c
+++ b/py/unicode.c
@@ -107,8 +107,7 @@
 }
 
 // TODO: Rename to str_charlen
-mp_uint_t unichar_charlen(const char *str, mp_uint_t len)
-{
+mp_uint_t unichar_charlen(const char *str, mp_uint_t len) {
 #if MICROPY_PY_BUILTINS_STR_UNICODE
     mp_uint_t charlen = 0;
     for (const char *top = str + len; str < top; ++str) {