diff --git a/trunk/src/app/srs_app_server.cpp b/trunk/src/app/srs_app_server.cpp
index e56d2042ae..9efdba41d7 100755
--- a/trunk/src/app/srs_app_server.cpp
+++ b/trunk/src/app/srs_app_server.cpp
@@ -690,6 +690,7 @@ int SrsServer::acquire_pid_file()
         if(errno == EACCES || errno == EAGAIN) {
             ret = ERROR_SYSTEM_PID_ALREADY_RUNNING;
             srs_error("srs is already running! ret=%#x", ret);
+            ::close(fd);
             return ret;
         }
         
diff --git a/trunk/src/app/srs_app_utility.cpp b/trunk/src/app/srs_app_utility.cpp
index 66107cc6c0..d6ac34701f 100644
--- a/trunk/src/app/srs_app_utility.cpp
+++ b/trunk/src/app/srs_app_utility.cpp
@@ -71,6 +71,7 @@ int srs_socket_connect(string server, int port, int64_t timeout, st_netfd_t* pst
     if(stfd == NULL){
         ret = ERROR_ST_OPEN_SOCKET;
         srs_error("st_netfd_open_socket failed. ret=%d", ret);
+        ::close(sock);
         return ret;
     }
     
@@ -94,12 +95,14 @@ int srs_socket_connect(string server, int port, int64_t timeout, st_netfd_t* pst
     srs_info("connect ok. server=%s, ip=%s, port=%d", server.c_str(), ip.c_str(), port);
     
     *pstfd = stfd;
+    ::close(sock);
     return ret;
     
 failed:
     if (stfd) {
         srs_close_stfd(stfd);
     }
+    ::close(sock);
     return ret;
 }
 
diff --git a/trunk/src/kernel/srs_kernel_codec.cpp b/trunk/src/kernel/srs_kernel_codec.cpp
index 42d577204c..75001d241d 100644
--- a/trunk/src/kernel/srs_kernel_codec.cpp
+++ b/trunk/src/kernel/srs_kernel_codec.cpp
@@ -169,7 +169,7 @@ string srs_codec_avc_level2str(SrsAvcLevel level)
 // 1 = 11 kHz = 11025 Hz
 // 2 = 22 kHz = 22050 Hz
 // 3 = 44 kHz = 44100 Hz
-int flv_sample_rates[] = {5512, 11025, 22050, 44100};
+int flv_sample_rates[] = {5512, 11025, 22050, 44100, 0};
 
 // the sample rates in the codec,
 // in the sequence header.
diff --git a/trunk/src/kernel/srs_kernel_utility.cpp b/trunk/src/kernel/srs_kernel_utility.cpp
index 276c321233..60eef5ddb6 100644
--- a/trunk/src/kernel/srs_kernel_utility.cpp
+++ b/trunk/src/kernel/srs_kernel_utility.cpp
@@ -652,7 +652,7 @@ int srs_av_base64_decode(u_int8_t* out, const char* in_str, int out_size)
     // no sign extension
     const u_int8_t *in = (const u_int8_t*)in_str;
     unsigned bits = 0xff;
-    unsigned v;
+    unsigned v = 0;
 
     while (end - dst > 3) {
         BASE64_DEC_STEP(0);