Ensure the "unique-not-null" flag is set for automatic indexes on columns
declared with "col UNIQUE NOT NULL" (where the NOT NULL comes after the
UNIQUE).

FossilOrigin-Name: 8767f7b880f2e4112f75f0b6ef7be3f50ab1ae20e103e7d03d8bfe77e6c79438
diff --git a/src/sqliteInt.h b/src/sqliteInt.h
index b7b402b..f408ff6 100644
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -1754,6 +1754,7 @@
 #define COLFLAG_PRIMKEY  0x0001    /* Column is part of the primary key */
 #define COLFLAG_HIDDEN   0x0002    /* A hidden column in a virtual table */
 #define COLFLAG_HASTYPE  0x0004    /* Type name follows column name */
+#define COLFLAG_UNIQUE   0x0008    /* Column def contains "UNIQUE" or "PK" */
 
 /*
 ** A "Collating Sequence" is defined by an instance of the following