RFR: 8294858: XMLStreamReader does not respect jdk.xml.maxXMLNameLimit=0 for namespace names

[Joe Wang]

Fixed an issue where the condition check for limit=0 was missed.

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Commit messages:
 - 8294858: XMLStreamReader does not respect jdk.xml.maxXMLNameLimit=0 for namespace names

Changes: https://git.openjdk.org/jdk/pull/10958/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=10958&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8294858
  Stats: 97 lines in 1 file changed: 97 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/10958.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10958/head:pull/10958

PR: https://git.openjdk.org/jdk/pull/10958