Remove chained comparison

https://lab.llvm.org/buildbot/#/builders/133/builds/11692

Author: cor3ntin

SingleSource/Regression/C/gcc-c-torture/execute/20180921-1.c

@@ -59,7 +59,7 @@ int aw(int ar) {
       for (; e; e++)
         for (; q;)
           return ax[e];
-      if (bc.c < g.d <= a[7])
+      if ((bc.c < g.d) <= a[7])
         aa--;
     }
     {