stream : check n_segments and continue if 0

Author: danbev

examples/stream/stream.cpp

@@ -352,14 +352,17 @@ int main(int argc, char ** argv) {
 
             // print result;
             {
+                const int n_segments = whisper_full_n_segments(ctx);
+                if (n_segments == 0) {
+                    continue;
+                }
                 printf("\33[2K\r");
 
                 // print long empty line to clear the previous line
                 printf("%s", std::string(100, ' ').c_str());
 
                 printf("\33[2K\r");
 
-                const int n_segments = whisper_full_n_segments(ctx);
                 for (int i = 0; i < n_segments; ++i) {
                     const char * text = whisper_full_get_segment_text(ctx, i);