hg: graal/graal-compiler: GraphPE: Fix bug in loop detection

[doug.simon at oracle.com]

Changeset: 6d1914226c63
Author:    Christian Wimmer <christian.wimmer at oracle.com>
Date:      2016-01-11 16:47 -0800
URL:       http://hg.openjdk.java.net/graal/graal-compiler/rev/6d1914226c63

GraphPE: Fix bug in loop detection

! graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/GraphDecoder.java
! graal/com.oracle.graal.truffle.test/src/com/oracle/graal/truffle/test/BytecodeInterpreterPartialEvaluationTest.java