RFR: 8289471: Issue in Initialization of keys in ErrorMsg.java and XPATHErrorResources.java

[Shruthi]

Modifying inaccurate initialization of keys in ErrorMsg.java and XPATHErrorResources.java
The bug report for the same: https://bugs.openjdk.org/browse/JDK-8289471

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Commit messages:
 - Resolving merge conflict
 - Modifying inaccurate initialization of keys in ErrorMsg.java and XPATHErrorResources.java

Changes: https://git.openjdk.org/jdk/pull/9369/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=9369&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8289471
  Stats: 5 lines in 2 files changed: 0 ins; 0 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/9369.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9369/head:pull/9369

PR: https://git.openjdk.org/jdk/pull/9369