MT#62181 AmRtpStream: fix fd resource leak

Change-Id: Ideaf90846f162161a9adfcd897de22283a0a0faa
Warned-by: Coverity

core/AmRtpStream.cpp

@@ -119,6 +119,7 @@ int AmRtpStream::getLocalSocket()
   } 
 
   if((rtcp_sd = socket(l_saddr.ss_family,SOCK_DGRAM,0)) == -1) {
+    close(sd);
     ERROR("%s\n",strerror(errno));
     throw string ("while creating new socket.");
   } 
@@ -127,12 +128,14 @@ int AmRtpStream::getLocalSocket()
   if(ioctl(sd, FIONBIO , &true_opt) == -1){
     ERROR("%s\n",strerror(errno));
     close(sd);
+    close(rtcp_sd);
     throw string ("while setting socket non blocking.");
   }
 
   if(ioctl(rtcp_sd, FIONBIO , &true_opt) == -1){
     ERROR("%s\n",strerror(errno));
     close(sd);
+    close(rtcp_sd);
     throw string ("while setting socket non blocking.");
   }