Remember the size of the Vdbe.aOp[] array in bytes, to avoid unnecessary
calls to sqlite3_msize().

FossilOrigin-Name: 3e852804c85a5c9f4c4ffafd55d03af6d19fe5cc
diff --git a/src/sqliteInt.h b/src/sqliteInt.h
index e1fe6da..53f0709 100644
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -2732,6 +2732,7 @@
   int nSet;            /* Number of sets used so far */
   int nOnce;           /* Number of OP_Once instructions so far */
   int nOpAlloc;        /* Number of slots allocated for Vdbe.aOp[] */
+  int szOpAlloc;       /* Bytes of memory space allocated for Vdbe.aOp[] */
   int iFixedOp;        /* Never back out opcodes iFixedOp-1 or earlier */
   int ckBase;          /* Base register of data during check constraints */
   int iSelfTab;        /* Table of an index whose exprs are being coded */