ExtendedMigrationSqlServerGenerator.ColumnAnnotationRemoved function now returns false when an annotation is not present in neither oldColumn or newColumn. (#152)

Co-authored-by: Piotr Szyperski <piotr.szyperski@bankup.io>

Author: pecea

EntityFrameworkCore.Extensions/Services/ExtendedMigrationSqlServerGenerator.cs

@@ -80,6 +80,6 @@ private void DropMaskingFunction(AlterColumnOperation operation, MigrationComman
 
         private bool ColumnAnnotationAdded(string annotrationName, ColumnOperation oldColumn, ColumnOperation newColumn) => oldColumn.FindAnnotation(annotrationName) == null && newColumn.FindAnnotation(annotrationName) != null;
 
-        private bool ColumnAnnotationRemoved(string annotrationName, ColumnOperation oldColumn, ColumnOperation newColumn) => !ColumnAnnotationAdded(annotrationName, oldColumn, newColumn);
+        private bool ColumnAnnotationRemoved(string annotrationName, ColumnOperation oldColumn, ColumnOperation newColumn) => oldColumn.FindAnnotation(annotrationName) != null && newColumn.FindAnnotation(annotrationName) == null;
     }
 }