fix: warning: unused variable 'ret'

Signed-off-by: Oleg Kokorin <[email protected]>

Author: Ole2mail

storage/kvstore/tdbstore/source/TDBStore.cpp

@@ -1490,7 +1490,7 @@ int TDBStore::check_erase_before_write(uint8_t area, uint32_t offset, uint32_t s
     uint32_t end_offset;
     while (size) {
         uint32_t dist, offset_from_start;
-        int ret;
+        // int ret;
         offset_in_erase_unit(area, offset, offset_from_start, dist);
         uint32_t chunk = std::min(size, dist);