Combine two StringSwitch::Cases because Cases now can take 6 parameters.

llvm-svn: 282307
diff --git a/lld/ELF/LinkerScript.cpp b/lld/ELF/LinkerScript.cpp
index b7c65ed..0fb8c2c 100644
--- a/lld/ELF/LinkerScript.cpp
+++ b/lld/ELF/LinkerScript.cpp
@@ -1086,8 +1086,7 @@
       .Cases("*", "/", 5)
       .Cases("+", "-", 4)
       .Cases("<<", ">>", 3)
-      .Cases("<", "<=", ">", ">=", 2) // Cases takes up to four cases.
-      .Cases("==", "!=", 2)
+      .Cases("<", "<=", ">", ">=", "==", "!=", 2)
       .Cases("&", "|", 1)
       .Default(-1);
 }