info: avoid unnecessary malloc/free for each log function call on MSVC
info: avoid unnecessary malloc/free for each log function call on MSVC

Avoid unnecessary malloc/free to get the file basename on MSVC to avoid
unnecessary overhead when doing GST_DEBUG=foo:5 or so (since it would be
done before the category log level filtering).

shelsonjava/gstreamer,ensonic/gstreamer,Lachann/gstreamer,cfoch/gstreamer,lovebug356/gstreamer,ahmedammar/platform_external_gst_gstreamer,jpakkane/gstreamer,krichter722/gstreamer,ylatuya/gstreamer,cablelabs/gstreamer,mrchapp/gstreamer,cfoch/gstreamer,jpakkane/gstreamer,lubosz/gstreamer,lubosz/gstreamer,jpxiong/gstreamer,cfoch/gstreamer,krichter722/gstreamer,jpxiong/gstreamer,drothlis/gstreamer,ylatuya/gstreamer,krichter722/gstreamer,ylatuya/gstreamer,magcius/gstreamer,cablelabs/gstreamer,ahmedammar/platform_external_gst_gstreamer,lubosz/gstreamer,cablelabs/gstreamer,StreamUtils/gstreamer,krieger-od/gstreamer,centricular/gstreamer,magcius/gstreamer,surround-io/gstreamer,mparis/gstreamer,lovebug356/gstreamer,Lachann/gstreamer,ensonic/gstreamer,centricular/gstreamer,collects/gstreamer,Distrotech/gstreamer,jpxiong/gstreamer,magcius/gstreamer,drothlis/gstreamer,ylatuya/gstreamer,justinjoy/gstreamer,cablelabs/gstreamer,jpakkane/gstreamer,shelsonjava/gstreamer,cfoch/gstreamer,justinjoy/gstreamer,Distrotech/gstreamer,krichter722/gstreamer,Lachann/gstreamer,justinjoy/gstreamer,surround-io/gstreamer,cfoch/gstreamer,ensonic/gstreamer,centricular/gstreamer,ahmedammar/platform_external_gst_gstreamer,centricular/gstreamer,krichter722/gstreamer,ahmedammar/platform_external_gst_gstreamer,ensonic/gstreamer,centricular/gstreamer,surround-io/gstreamer,ensonic/gstreamer,mrchapp/gstreamer,mparis/gstreamer,shelsonjava/gstreamer,lovebug356/gstreamer,Lachann/gstreamer,jpxiong/gstreamer,collects/gstreamer,drothlis/gstreamer,magcius/gstreamer,drothlis/gstreamer,justinjoy/gstreamer,krieger-od/gstreamer,Lachann/gstreamer,surround-io/gstreamer,StreamUtils/gstreamer,shelsonjava/gstreamer,StreamUtils/gstreamer,collects/gstreamer,Distrotech/gstreamer,drothlis/gstreamer,mrchapp/gstreamer,lovebug356/gstreamer,mrchapp/gstreamer,surround-io/gstreamer,lubosz/gstreamer,lubosz/gstreamer,collects/gstreamer,krieger-od/gstreamer,StreamUtils/gstreamer,collects/gstreamer,cablelabs/gstreamer,krieger-od/gstreamer,jpakkane/gstreamer,ylatuya/gstreamer,jpxiong/gstreamer,lovebug356/gstreamer,ahmedammar/platform_external_gst_gstreamer,StreamUtils/gstreamer,jpakkane/gstreamer,shelsonjava/gstreamer,mrchapp/gstreamer,mparis/gstreamer,mparis/gstreamer,Distrotech/gstreamer,mparis/gstreamer,magcius/gstreamer,Distrotech/gstreamer,justinjoy/gstreamer,krieger-od/gstreamer