Update plugin PDB loading

Author: Arthri

TerrariaServerAPI/TerrariaApi.Server/ServerApi.cs

@@ -349,9 +349,8 @@ internal static void LoadPlugins()
 						byte[] pe = null;
 						try
 						{
-							var pdb = Path.ChangeExtension(fileInfo.FullName, ".pdb");
-							var symbols = File.Exists(pdb) ? File.ReadAllBytes(pdb) : null;
-							assembly = Assembly.Load(pe = File.ReadAllBytes(fileInfo.FullName), symbols);
+							var pdbPath = Path.ChangeExtension(fileInfo.FullName, ".pdb");
+							assembly = Assembly.Load(pe = File.ReadAllBytes(fileInfo.FullName), File.Exists(pdb) ? File.ReadAllBytes(pdbPath) : null);
 						}
 						catch (BadImageFormatException)
 						{