Some indentations where lost. Fixed that

Author: Tim De Jong

GRDB/Core/WALSnapshot.swift

@@ -33,7 +33,7 @@ final class WALSnapshot: @unchecked Sendable {
     // @unchecked because sqlite3_snapshot has no threading requirements.
     // <https://www.sqlite.org/c3ref/snapshot.html>
     let sqliteSnapshot: UnsafeMutablePointer<sqlite3_snapshot>
-
+    
     init(_ db: Database) throws {
         var sqliteSnapshot: UnsafeMutablePointer<sqlite3_snapshot>?
         let code = withUnsafeMutablePointer(to: &sqliteSnapshot) {
@@ -55,7 +55,7 @@ final class WALSnapshot: @unchecked Sendable {
             // >    on a wal mode database with no wal file immediately
             // >    after it is first opened. At least one transaction must
             // >    be written to it first.
-
+            
             // Test condition 1:
             if sqlite3_get_autocommit(db.sqliteConnection) != 0 {
                 throw DatabaseError(
@@ -64,7 +64,7 @@ final class WALSnapshot: @unchecked Sendable {
                         Can't create snapshot because database is in autocommit mode.
                         """)
             }
-
+            
             // Test condition 2:
             if let journalMode = try? String.fetchOne(db, sql: "PRAGMA journal_mode"),
                 journalMode != "wal"
@@ -75,7 +75,7 @@ final class WALSnapshot: @unchecked Sendable {
                         Can't create snapshot because database is not in WAL mode.
                         """)
             }
-
+            
             // Condition 3 can't happen because GRDB only calls this
             // initializer from read transactions.
             //
@@ -91,11 +91,11 @@ final class WALSnapshot: @unchecked Sendable {
         }
         self.sqliteSnapshot = sqliteSnapshot
     }
-
+    
     deinit {
         sqlite3_snapshot_free(sqliteSnapshot)
     }
-
+    
     /// Compares two WAL snapshots.
     ///
     /// `a.compare(b) < 0` iff a is older than b.