Replace NULL with false as a return value

	* cgraph.h (cgraph_edge::binds_to_current_def_p):
	Replace NULL with false as a return value.

From-SVN: r241336

gcc/ChangeLog

+2016-10-19  Martin Liska  <mliska@suse.cz>
+
+	* cgraph.h (cgraph_edge::binds_to_current_def_p):
+	Replace NULL with false as a return value.
+
 2016-10-19  Thomas Schwinge  <thomas@codesourcery.com>
 
 	PR tree-optimization/78024

gcc/cgraph.h

@@ -3042,7 +3042,7 @@ cgraph_edge::binds_to_current_def_p ()
   if (callee)
     return callee->binds_to_current_def_p (caller);
   else
-    return NULL;
+    return false;
 }
 
 /* Return true if the TM_CLONE bit is set for a given FNDECL.  */