RFR: 7329: Exception while opening Method Profile page.

[Suchita Chaturvedi]

This PR addresses the null pointer exception issue.

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

Commit messages:
 - 7329: Exception while opening Method Profile page.

Changes: https://git.openjdk.java.net/jmc/pull/277/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jmc&pr=277&range=00
  Issue: https://bugs.openjdk.java.net/browse/JMC-7329
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jmc/pull/277.diff
  Fetch: git fetch https://git.openjdk.java.net/jmc pull/277/head:pull/277

PR: https://git.openjdk.java.net/jmc/pull/277