Don't throw on Settings access fail

The isQuiesceOnErrorEnabled() function makes a call to the Settings
daemon.  If that throws an exception, the code just re-throws the
exception.  While that exception is caught by sdbusplus, it causes the
function to exit early and not actually save the event log in the class.

To fix this, just change the code to say quiesceOnError isn't enabled
and continue on.

Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: I814e6dae90483c98e0f24af90baa5f267d22b78d
diff --git a/log_manager.cpp b/log_manager.cpp
index d573972..d3a50cd 100644
--- a/log_manager.cpp
+++ b/log_manager.cpp
@@ -281,7 +281,7 @@
     {
         lg2::error("Error reading QuiesceOnHwError property: {ERROR}", "ERROR",
                    e);
-        throw;
+        return false;
     }
 
     return std::get<bool>(property);