[jdk11u-dev] RFR: 8305763: Parsing a URI with an underscore goes through a silent exception, negatively impacting performance

[Dhamoder Nalla]

Backport of https://github.com/openjdk/jdk/pull/13430

Issue:
[JDK-8305763](https://bugs.openjdk.org/browse/JDK-8305763): Parsing a URI with an underscore goes through a silent exception, negatively impacting performance

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Commit messages:
 - Backport 310115aa477067e9e9f35251fafde59518d3fae5

Changes: https://git.openjdk.org/jdk11u-dev/pull/2041/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2041&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8305763
  Stats: 29 lines in 1 file changed: 20 ins; 0 del; 9 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2041.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2041/head:pull/2041

PR: https://git.openjdk.org/jdk11u-dev/pull/2041