RFR: 8273148: Shouldn't increment _ifop_count when IfOp is created

[Denghui Dong]

Hi,

Please help review this small fix.

IIUC, _ifop_count is incremented when IfOp is no need to create, but there is a wrong increment operation in the current implementation(CE_Eliminator::make_ifop).

Thanks,
Denghui

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Commit messages:
 - 8273148: Shouldn't increment _ifop_count when IfOp is created

Changes: https://git.openjdk.java.net/jdk/pull/5305/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5305&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8273148
  Stats: 2 lines in 1 file changed: 1 ins; 1 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5305.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5305/head:pull/5305

PR: https://git.openjdk.java.net/jdk/pull/5305