catch exceptions as const

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Id4f88568c2897ab1117dcad647783a9127c0600d
diff --git a/dump_offload.cpp b/dump_offload.cpp
index ada0e8a..7795bb2 100644
--- a/dump_offload.cpp
+++ b/dump_offload.cpp
@@ -218,7 +218,7 @@
             writeOnUnixSocket(socketFD(), buffer.get(), size);
         }
     }
-    catch (std::ifstream::failure& oe)
+    catch (const std::ifstream::failure& oe)
     {
         std::remove(writePath.c_str());
         auto err = errno;