Omit NOT NULL checks on unchanging columns in an UPDATE.

FossilOrigin-Name: 6a3aaedfb41735996470abbae6d3cd1be1f508b3
diff --git a/src/sqliteInt.h b/src/sqliteInt.h
index f86e9da..ef80e8d 100644
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -3545,7 +3545,7 @@
 int sqlite3GenerateIndexKey(Parse*, Index*, int, int, int, int*,Index*,int);
 void sqlite3ResolvePartIdxLabel(Parse*,int);
 void sqlite3GenerateConstraintChecks(Parse*,Table*,int*,int,int,int,int,
-                                     u8,u8,int,int*);
+                                     u8,u8,int,int*,int*);
 void sqlite3CompleteInsertion(Parse*,Table*,int,int,int,int*,int,int,int);
 int sqlite3OpenTableAndIndices(Parse*, Table*, int, u8, int, u8*, int*, int*);
 void sqlite3BeginWriteOperation(Parse*, int, int);