Document str_getcsv() and fgetcsv() change in 8.3.0 (closes #4197) (#4198)

Author: jimwins

reference/filesystem/functions/fgetcsv.xml

@@ -162,6 +162,14 @@
         deprecated.
        </entry>
       </row>
+      <row>
+       <entry>8.3.0</entry>
+       <entry>
+        An empty string is returned instead of a string with a single
+        null byte for the last field if it contains only an unterminated
+        enclosure.
+       </entry>
+      </row>
       <row>
        <entry>8.0.0</entry>
        <entry>

reference/strings/functions/str-getcsv.xml

@@ -88,6 +88,9 @@
         <function>fputcsv</function>.
        </entry>
       </row>
+      <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('function.fgetcsv')/db:refsect1[@role='changelog']//db:row[db:entry[text()='8.3.0']]/.)">
+       <xi:fallback/>
+      </xi:include>
       <row>
        <entry>7.4.0</entry>
        <entry>