Fixed some small potential crashes.

app/src/main/java/org/transdroid/core/gui/log/Log.java

@@ -61,7 +61,7 @@ public class Log implements ITLogger {
 			DeleteBuilder<ErrorLogEntry, Integer> db = errorLogDao.deleteBuilder();
 			db.setWhere(db.where().le(ErrorLogEntry.DATEANDTIME, new Date(new Date().getTime() - MAX_LOG_AGE)));
 			errorLogDao.delete(db.prepare());
-		} catch (SQLException e) {
+		} catch (Exception e) {
 			android.util.Log.e(LOG_NAME, "Cannot write log message to database: " + e.toString());
 		}
 	}

app/src/main/java/org/transdroid/daemon/Aria2c/Aria2Adapter.java

@@ -236,8 +236,10 @@ public class Aria2Adapter implements IDaemonAdapter {
 			JSONArray signed = new JSONArray();
 			// Start with the secret token as parameter and then add the normal parameters
 			signed.put("token:" + settings.getExtraPassword());
-			for (int i = 0; i < params.length(); i++) {
-				signed.put(params.get(i));
+			if (params != null) {
+				for (int i = 0; i < params.length(); i++) {
+					signed.put(params.get(i));
+				}
 			}
 			params = signed;
 		}