catch exceptions as const

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ic2b49715c7b81ac5bcfc12ff2d3b4c593cd95ce7
diff --git a/globalhandler.cpp b/globalhandler.cpp
index c192cbb..2561e08 100644
--- a/globalhandler.cpp
+++ b/globalhandler.cpp
@@ -42,7 +42,7 @@
     {
         resetBMC();
     }
-    catch (std::exception& e)
+    catch (const std::exception& e)
     {
         log<level::ERR>(e.what());
         return ipmi::responseUnspecifiedError();