catch exceptions as const

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: If18cc0293b52ce5f7f8e068688aa17d28ed27d50
diff --git a/sol/sol_context.cpp b/sol/sol_context.cpp
index f0e036c..4428c9c 100644
--- a/sol/sol_context.cpp
+++ b/sol/sol_context.cpp
@@ -281,7 +281,7 @@
         }
         enableAccumulateTimer(true);
     }
-    catch (std::exception& e)
+    catch (const std::exception& e)
     {
         log<level::ERR>(e.what());
     }
@@ -305,7 +305,7 @@
             enableAccumulateTimer(true);
         }
     }
-    catch (std::exception& e)
+    catch (const std::exception& e)
     {
         log<level::ERR>(e.what());
     }