Systematically eliminating compiler warnings.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@5117 8ced0084-cf51-0410-be5f-012b33b47a6e

Source/Core/DebuggerUICommon/Src/MemoryView.cpp

@@ -398,7 +398,6 @@ void CMemoryView::OnPaint(wxPaintEvent& event)
 						break;
 					}
 				}
-				size_t len = strlen(dis);
 				strcat(dis, "\0");
 				curAddress += 32;
 			}