hg: jdk10/sandbox/langtools: 8175794: Type inference regression after JDK-8078093

[chris.hegarty at oracle.com]

Changeset: c32ca555da54
Author:    vromero
Date:      2017-06-09 11:27 -0700
URL:       http://hg.openjdk.java.net/jdk10/sandbox/langtools/rev/c32ca555da54

8175794: Type inference regression after JDK-8078093
Reviewed-by: mcimadamore
Contributed-by: maurizio.cimadamore at oracle.com, vicente.romero at oracle.com

! src/jdk.compiler/share/classes/com/sun/tools/javac/comp/ArgumentAttr.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Infer.java
+ test/tools/javac/T8175794/MissingReturnConstraintTest.java