Update InconsistentSchema error message

Author: sgilmore10

matlab/src/matlab/+arrow/+tabular/Table.m

@@ -158,12 +158,12 @@ function displayScalarObject(obj)
                 otherSchemas = cellfun(@(rb) rb.Schema, batches(2:end), UniformOutput=false);
                 idx = cellfun(@(other) ~isequal(firstSchema, other), otherSchemas, UniformOutput=true);
                 inconsistentSchemaIndex = find(idx, 1,"first");
-                if ~isempty(badIndex)
-                    badIndex = badIndex + 1;
+                if ~isempty(inconsistentSchemaIndex)
+                    inconsistentSchemaIndex = inconsistentSchemaIndex + 1;
                     expectedSchema = arrow.tabular.internal.display.getSchemaString(firstSchema);
-                    inconsistentSchema = arrow.tabular.internal.display.getSchemaString(batches{inconsistentSchemaIndex }.Schema);
-                    msg = "Schema of RecordBatch %d is\n\n\t%s\n\nExpected RecordBatch Schema to be\n\n\t%s";
-                    msg = compose(msg, badIndex, unexpectedSchema, expectedSchema);
+                    inconsistentSchema = arrow.tabular.internal.display.getSchemaString(batches{inconsistentSchemaIndex}.Schema);
+                    msg = "All RecordBatches must have a the same Schema.\n\nSchema of RecordBatch %d is\n\n\t%s\n\nExpected RecordBatch Schema to be\n\n\t%s";
+                    msg = compose(msg, inconsistentSchemaIndex, inconsistentSchema, expectedSchema);
                     error("arrow:Table:FromRecordBatches:InconsistentSchema", msg);
                 end
             end