RFR: 8278532: Fix some typos in C1 comments [v2]

[Hamlin Li]

> This is a trivial patch to fix some typos in C1 comments.

Hamlin Li has updated the pull request incrementally with one additional commit since the last revision:

  Fix typo in C2 too

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/6793/files
  - new: https://git.openjdk.java.net/jdk/pull/6793/files/64b54296..dec24a62

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=6793&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=6793&range=00-01

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6793.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6793/head:pull/6793

PR: https://git.openjdk.java.net/jdk/pull/6793