Dispose of database connection if it cant't be opened

Author: lanesCSO

src/API.Library/API.Library.csproj

@@ -12,7 +12,7 @@
     <PackageId>API.Library</PackageId>
     <Product>API Library</Product>
     <Copyright>Central Statistics Office, Ireland</Copyright>
-    <Version>6.1.23</Version>
+    <Version>6.1.24</Version>
     <Authors>Central Statistics Office, Ireland</Authors>
     <SignAssembly>False</SignAssembly>
     <RepositoryUrl>https://github.com/CSOIreland/Server-API-Library</RepositoryUrl>

src/API.Library/Entities/ADO.cs

@@ -102,7 +102,7 @@ public void OpenConnection(string connectionName)
             catch (Exception e)
             {
                 Log.Instance.Fatal(e);
-                connection.Dispose();
+                Dispose();
                 throw;
             }
         }