dev-ml/lablgtk: fix Makefile

Closes: https://bugs.gentoo.org/888607
Signed-off-by: Alfredo Tupone <tupone@gentoo.org>

dev-ml/lablgtk/files/lablgtk-2.18.12-Makefile.patch

@@ -1,5 +1,14 @@
 --- a/src/Makefile	2022-12-23 21:39:09.743150707 +0100
 +++ b/src/Makefile	2022-12-23 21:39:40.219667855 +0100
+@@ -23,7 +23,7 @@
+ TARGETS = varcc$(XE) lablgtktop$(XE) lablgtk2$(XB) gdk_pixbuf_mlsource$(XE) \
+ 	$(THINITOBJS) build.ml
+ 
+-all: dist byte
++all: dist byte sourceView2Enums.ml
+ world: dist byte $(CAMLBEST)
+ install: findlib-install
+ uninstall: findlib-uninstall
 @@ -617,7 +617,7 @@
  			gtk_tags.h gdk_tags.h ml_gtktext.h sourceView_tags.h wrappers.h