configure: fix LARGEADDRESSAWARE flag with MSVC

Otherwise it would get translated like a library path (-L option),
which breaks setting the flag.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

configure

@@ -3382,6 +3382,7 @@ msvc_common_flags(){
             -lavifil32)           echo vfw32.lib ;;
             -lavicap32)           echo vfw32.lib user32.lib ;;
             -l*)                  echo ${flag#-l}.lib ;;
+            -LARGEADDRESSAWARE)   echo $flag ;;
             -L*)                  echo -libpath:${flag#-L} ;;
             *)                    echo $flag ;;
         esac