fix: taosbenchmark coverity scan issues (#17378)

* fix: taosbenchmark coverity scan issues

* fix: taosbenchmark default json case

* fix: update taos-tools 217a267

* fix: taosbenchmark coverity scan issues 2849aa4

cmake/taostools_CMakeLists.txt.in

@@ -2,7 +2,7 @@
 # taos-tools
 ExternalProject_Add(taos-tools
         GIT_REPOSITORY https://github.com/taosdata/taos-tools.git
-        GIT_TAG 217a267
+        GIT_TAG 2849aa4
         SOURCE_DIR "${TD_SOURCE_DIR}/tools/taos-tools"
         BINARY_DIR ""
         #BUILD_IN_SOURCE TRUE