RFR: 8313809: String template fails with java.lang.StringIndexOutOfBoundsException if last fragment is UTF16 [v2]

[Jim Laskey]

> The last fragment of a string template does not get it's coder added to the mix.

Jim Laskey has updated the pull request incrementally with one additional commit since the last revision:

  Requested by @cl4es

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/15195/files
  - new: https://git.openjdk.org/jdk/pull/15195/files/ae6bc58c..3dba5187

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=15195&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=15195&range=00-01

  Stats: 6 lines in 2 files changed: 2 ins; 2 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/15195.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15195/head:pull/15195

PR: https://git.openjdk.org/jdk/pull/15195