main/gtkglext: fix build break by modifying local variable name conflict

main/gtkglext/APKBUILD

@@ -2,7 +2,7 @@
 # Maintainer: William Pitcock <nenolod@dereferenced.org>
 pkgname=gtkglext
 pkgver=1.2.0
-pkgrel=11
+pkgrel=12
 pkgdesc="GTK+ OpenGL Extension"
 url="https://projects.gnome.org/gtkglext/"
 arch="all"
@@ -14,6 +14,7 @@ makedepends="$depends_dev"
 install=
 subpackages="$pkgname-dev $pkgname-doc"
 source="http://downloads.sourceforge.net/$pkgname/$pkgname-$pkgver.tar.gz
+	gtkglext-local-parm.patch
 	gtkglext-deprecated.patch"
 
 _builddir="$srcdir/$pkgname-$pkgver"
@@ -44,4 +45,5 @@ package() {
 }
 
 sha512sums="464203531698703d47dfb0746663f10c889f48542dd5d7a6e3dd6c6a197de4089628e2d39601d3ccbe3436ee396260eaa1f09220ecf04ba12891939209a7dc50  gtkglext-1.2.0.tar.gz
+da398ad6782c540f3494f5bebb566e338a0a7ccb171453b1b9f9dc2e387d965f73cfd4ead8b63ab6a009e150e20f76f0b2ddc3636a8af241fa1a0aadeb650d67  gtkglext-local-parm.patch
 bca7526f014a1ebd1453fd295a02f43e29729232e732ade8e361d718e3005433a112ca5367a366ebd31c4d52cf8aa6c360fe3e315b85182e7fe5185dd163618f  gtkglext-deprecated.patch"

main/gtkglext/gtkglext-local-parm.patch

@@ -0,0 +1,20 @@
+--- a/gdk/gdkglshapes.c
++++ b/gdk/gdkglshapes.c
+@@ -544,7 +544,7 @@
+   {-Z, -X, 0}
+ };
+
+-static int index[20][3] =
++static int loc_index[20][3] =
+ {
+   {0, 4, 1},
+   {0, 9, 4},
+@@ -574,7 +574,7 @@
+   int i;
+
+   for (i = 19; i >= 0; i--) {
+-    drawtriangle(i, idata, index, shadeType);
++    drawtriangle(i, idata, loc_index, shadeType);
+   }
+ }
+