process_pipeline: replace strcpy with snprintf

snprintf is always NULL-terminated in compare to strcpy.

src/process_pipeline.c

@@ -161,7 +161,7 @@ static void setup_capture(void)
 		exit(EXIT_FAILURE);
 	}
 
-	strcpy(burst_dir, tempdir);
+	snprintf(burst_dir, sizeof(bufst_dir), tempdir);
 }
 
 static void