Fix TKLCAF library (= instead of == in if-condition)

Submitted upstream: http://www.opencascade.org/org/forum/thread_18622/

From: Michael Wild <themiwi@users.sourceforge.net>

Signed-off-by: Michael Wild <themiwi@users.sourceforge.net>
---
 ros/src/TDataStd/TDataStd_Constraint.cxx |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/ros/src/TDataStd/TDataStd_Constraint.cxx b/ros/src/TDataStd/TDataStd_Constraint.cxx
index c164aea..4966d39 100644
--- a/ros/src/TDataStd/TDataStd_Constraint.cxx
+++ b/ros/src/TDataStd/TDataStd_Constraint.cxx
@@ -213,7 +213,7 @@ const Handle(TNaming_NamedShape)&  TDataStd_Constraint::GetPlane() const
 void TDataStd_Constraint::SetType (const TDataStd_ConstraintEnum CTR) 
 {  
   // OCC2932 correction
-  if(myType = CTR) return;
+  if(myType == CTR) return;
 
   Backup();
   myType = CTR;