gcc report issue about
```
int i;
...
int j, k, regKey;
for(j=0; j<pPk->nKeyCol; j++){
k = sqlite3TableColumnToIndex(pIdx, pPk->aiColumn[j]);
assert( k>=0 && k<pIdx->nColumn );
sqlite3VdbeAddOp3(v, OP_Column, iIdxCur, k, regKey+j);
VdbeComment((v, "%s.column(%d)", pIdx->zName, i));
```
The last line looks like mistake,
should be j instead of i?
gcc report error about usage of uninitialized i.