fix: fix coverity scan issues

source/libs/function/src/udfd.c

@@ -61,7 +61,6 @@ const char *udfdCPluginUdfInitLoadInitDestoryFuncs(SUdfCPluginCtx *udfCtx, const
 
   char  destroyFuncName[TSDB_FUNC_NAME_LEN + 9] = {0};
   char *destroySuffix = "_destroy";
-  strcpy(destroyFuncName, udfName);
   snprintf(destroyFuncName, sizeof(destroyFuncName), "%s%s", udfName, destroySuffix);
   uv_dlsym(&udfCtx->lib, destroyFuncName, (void **)(&udfCtx->destroyFunc));
   return udfName;
@@ -69,7 +68,7 @@ const char *udfdCPluginUdfInitLoadInitDestoryFuncs(SUdfCPluginCtx *udfCtx, const
 
 void udfdCPluginUdfInitLoadAggFuncs(SUdfCPluginCtx *udfCtx, const char *udfName) {
   char processFuncName[TSDB_FUNC_NAME_LEN] = {0};
-  strcpy(processFuncName, udfName);
+  strncpy(processFuncName, udfName, sizeof(processFuncName));
   uv_dlsym(&udfCtx->lib, processFuncName, (void **)(&udfCtx->aggProcFunc));
 
   char  startFuncName[TSDB_FUNC_NAME_LEN + 7] = {0};
@@ -94,6 +93,7 @@ int32_t udfdCPluginUdfInit(SScriptUdfInfo *udf, void **pUdfCtx) {
   err = uv_dlopen(udf->path, &udfCtx->lib);
   if (err != 0) {
     fnError("can not load library %s. error: %s", udf->path, uv_strerror(err));
+    taosMemoryFree(udfCtx);
     return TSDB_CODE_UDF_LOAD_UDF_FAILURE;
   }
   const char *udfName = udf->name;
@@ -102,7 +102,7 @@ int32_t udfdCPluginUdfInit(SScriptUdfInfo *udf, void **pUdfCtx) {
 
   if (udf->funcType == UDF_FUNC_TYPE_SCALAR) {
     char processFuncName[TSDB_FUNC_NAME_LEN] = {0};
-    strcpy(processFuncName, udfName);
+    strncpy(processFuncName, udfName, sizeof(processFuncName));
     uv_dlsym(&udfCtx->lib, processFuncName, (void **)(&udfCtx->scalarProcFunc));
   } else if (udf->funcType == UDF_FUNC_TYPE_AGG) {
     udfdCPluginUdfInitLoadAggFuncs(udfCtx, udfName);