Remove some plain "throw;"

Usually, we want to re-throw what we caught in this case

Signed-off-by: Laurent Bonnans <[email protected]>

src/libaktualizr/config/config.cc

@@ -128,7 +128,7 @@ void Config::postUpdateValues() {
     if (!tls.server_url_path.empty()) {
       try {
         tls.server = Utils::readFile(tls.server_url_path, true);
-      } catch (const boost::filesystem::filesystem_error& e) {
+      } catch (const std::exception& e) {
         LOG_ERROR << "Couldn't read gateway URL: " << e.what();
         tls.server = "";
       }

src/libaktualizr/crypto/p11engine.cc

@@ -121,7 +121,7 @@ P11Engine::P11Engine(P11Config config) : config_(std::move(config)), ctx_(config
     // an engine which has not been fully initialized
     ENGINE_free(engine);
     ENGINE_cleanup();  // for openssl < 1.1
-    throw;
+    throw exc;
   }
 
   ssl_engine_ = engine;

src/libaktualizr/storage/sqlstorage.cc

@@ -1924,7 +1924,7 @@ void SQLStorage::removeTargetFile(const std::string& target_name) {
     boost::filesystem::remove(images_path_ / filename);
   } catch (std::exception& e) {
     LOG_ERROR << "Could not remove target file";
-    throw;
+    throw e;
   }
 
   db.commitTransaction();