Fix dlerror() usage

Author: vinser52

src/utils/utils_load_library.c

@@ -76,7 +76,8 @@ void *utils_open_library(const char *filename, int userFlags) {
 
     void *handle = dlopen(filename, dlopenFlags);
     if (handle == NULL) {
-        LOG_FATAL("dlopen(%s) failed with error: %s", filename, dlerror());
+        char *error_str = dlerror();
+        LOG_FATAL("dlopen(%s) failed with error: %s", filename, error_str);
     }
 
     return handle;
@@ -93,7 +94,8 @@ void *utils_get_symbol_addr(void *handle, const char *symbol,
 
     void *addr = dlsym(handle, symbol);
     if (addr == NULL) {
-        LOG_ERR("required symbol not found: %s (error: %s)", symbol, dlerror());
+        char *error_str = dlerror();
+        LOG_ERR("required symbol not found: %s (error: %s)", symbol, error_str);
     }
 
     return addr;