修复编译警告

ext-codec/AACRtp.cpp

@@ -86,7 +86,7 @@ bool AACRtpDecoder::inputRtp(const RtpPacket::Ptr &rtp, bool key_pos) {
     }
 
     // 每个audio unit时间戳增量
-    auto dts_inc = (stamp - _last_dts) / au_header_count;
+    auto dts_inc = static_cast<int64_t>(stamp - _last_dts) / au_header_count;
     if (dts_inc < 0 || dts_inc > 100) {
         // 时间戳增量异常，忽略
         dts_inc = 0;

ext-codec/JPEGRtp.cpp

@@ -598,7 +598,7 @@ void JPEGRtpEncoder::rtpSendJpeg(const uint8_t *buf, int size, uint64_t pts, uin
 {
     const uint8_t *qtables[4] = { NULL };
     int nb_qtables = 0;
-    uint8_t w, h;
+    uint8_t w { 0 }, h { 0 };
     uint8_t *p;
     int off = 0; /* fragment offset of the current JPEG frame */
     int len;