PEP 7 style for if/else in C

Add also a newline for readability in normalize_encoding().
diff --git a/Objects/stringlib/codecs.h b/Objects/stringlib/codecs.h
index 749e765..a9d0a34 100644
--- a/Objects/stringlib/codecs.h
+++ b/Objects/stringlib/codecs.h
@@ -314,8 +314,9 @@
         else if (Py_UNICODE_IS_SURROGATE(ch)) {
             Py_ssize_t startpos, endpos, newpos;
             Py_ssize_t k;
-            if (error_handler == _Py_ERROR_UNKNOWN)
+            if (error_handler == _Py_ERROR_UNKNOWN) {
                 error_handler = get_error_handler(errors);
+            }
 
             startpos = i-1;
             endpos = startpos+1;