Fix ctrl+c may lead to coredump (#2511)

@@ -135,6 +135,7 @@ us_silver.json
 kokoro-multi-lang-v1_0
 sherpa-onnx-fire-red-asr-large-zh_en-2025-02-16
 cmake-build-debug
+cmake-build-release
 README-DEV.txt
 *.rknn
 *.jit

@@ -165,6 +165,9 @@ int32_t main() {
       while (samples_queue.empty() && !stop) {
         condition_variable.wait(lock);
       }
+      if (stop) {
+        break;
+      }
 
       const auto &s = samples_queue.front();
       if (!resampler.Get()) {

@@ -172,6 +172,9 @@ int32_t main() {
       while (samples_queue.empty() && !stop) {
         condition_variable.wait(lock);
       }
+      if (stop) {
+        break;
+      }
 
       const auto &s = samples_queue.front();
       if (!resampler.Get()) {

@@ -172,6 +172,9 @@ as the device_name.
       while (samples_queue.empty() && !stop) {
         condition_variable.wait(lock);
       }
+      if (stop) {
+        break;
+      }
 
       const auto &s = samples_queue.front();
       buffer.insert(buffer.end(), s.begin(), s.end());

@@ -167,6 +167,10 @@ int32_t main() {
         condition_variable.wait(lock);
       }
 
+      if (stop) {
+        break;
+      }
+
       const auto &s = samples_queue.front();
       if (!resampler.Get()) {
         buffer.insert(buffer.end(), s.begin(), s.end());

@@ -170,6 +170,9 @@ as the device_name.
       while (samples_queue.empty() && !stop) {
         condition_variable.wait(lock);
       }
+      if (stop) {
+        break;
+      }
 
       const auto &s = samples_queue.front();
       buffer.insert(buffer.end(), s.begin(), s.end());

@@ -164,6 +164,9 @@ int32_t main() {
       while (samples_queue.empty() && !stop) {
         condition_variable.wait(lock);
       }
+      if (stop) {
+        break;
+      }
 
       const auto &s = samples_queue.front();
       if (!resampler.Get()) {

@@ -172,6 +172,9 @@ int32_t main() {
       while (samples_queue.empty() && !stop) {
         condition_variable.wait(lock);
       }
+      if (stop) {
+        break;
+      }
 
       const auto &s = samples_queue.front();
       if (!resampler.Get()) {