parse: fix more compiler warnings
parse: fix more compiler warnings

Fix 'grammar.tab.c:815:6: warning: "YYENABLE_NLS" is not defined'
compiler warning and the same for YYLTYPE_IS_TRIVIAL. The two
translated strings aren't particularly helpful, so just define
YYENABLE_NLS to 0.

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