revert format

Author: tongke6

src/libspu/spu.h

@@ -423,7 +423,7 @@ struct RuntimeConfig {
                 int64_t fxp_fraction_bits = 0)
       : protocol(protocol),
         field(field),
-        fxp_fraction_bits(fxp_fraction_bits) {};
+        fxp_fraction_bits(fxp_fraction_bits){};
   RuntimeConfig(const RuntimeConfig& other) = default;
   explicit RuntimeConfig(const pb::RuntimeConfig& pb_conf);