engine/sqlite: Handle untyped sqlite columns without crashing

internal/endtoend/testdata/untyped_columns/sqlite/stdlib/query.sql

@@ -0,0 +1,5 @@
+-- original table name in sqlite schema was sqlite_sequence, rest of def is identical
+create table repro(id, name, seq);
+
+-- name: GetRepro :one
+select * from repro where id = ? limit 1;

internal/endtoend/testdata/untyped_columns/sqlite/stdlib/sqlc.json

@@ -0,0 +1,16 @@
+{
+  "version": "2",
+  "sql": [
+    {
+      "engine": "sqlite",
+      "schema": "query.sql",
+      "queries": "query.sql",
+      "gen": {
+        "go": {
+          "package": "db",
+          "out": "db"
+        }
+      }
+    }
+  ]
+}

internal/engine/sqlite/convert.go

@@ -109,10 +109,14 @@ func (c *cc) convertCreate_table_stmtContext(n *parser.Create_table_stmtContext)
 	}
 	for _, idef := range n.AllColumn_def() {
 		if def, ok := idef.(*parser.Column_defContext); ok {
+			typeName := "any"
+			if def.Type_name() != nil {
+				typeName = def.Type_name().GetText()
+			}
 			stmt.Cols = append(stmt.Cols, &ast.ColumnDef{
 				Colname:   identifier(def.Column_name().GetText()),
 				IsNotNull: hasNotNullConstraint(def.AllColumn_constraint()),
-				TypeName:  &ast.TypeName{Name: def.Type_name().GetText()},
+				TypeName:  &ast.TypeName{Name: typeName},
 			})
 		}
 	}