Clear escape delimiter buffer before peek in isEscapeDelimiter (apache#608).

Author: garydgregory

src/changes/changes.xml

@@ -54,6 +54,7 @@
       <action type="fix" dev="ggregory" due-to="Ruiqi Dong, Gary Gregory" issue="CSV-326">CSVPrinter Reader printing with quote and escape can emit CSV that its parser cannot read back.</action>
       <action type="fix" dev="ggregory" due-to="Ruiqi Dong, Gary Gregory" issue="CSV-327">CSVParser applies maxRows to record numbers instead of rows produced when setRecordNumber(...) is used.</action>
       <action type="fix" dev="ggregory" due-to="OldTruckDriver, Gary Gregory" issue="CSV-326">Escape Reader values with quote and escape (#606).</action>
+      <action type="fix" dev="ggregory" due-to="Dexter.k, Gary Gregory">Clear escape delimiter buffer before peek in isEscapeDelimiter (#608).</action>
       <!-- ADD -->
       <action type="add" dev="ggregory" due-to="Gary Gregory, Indy, Sylvia van Os" issue="CSV-307">Add an "Android Compatibility" section to the web site.</action>
       <action type="add" dev="ggregory" due-to="Ruiqi Dong, Gary Gregory" issue="CSV-325">Add CSVParser.Builder.setByteOffset(long) (#604).</action>