libpng: update to 1.6.44

Upstream has stubbed out arm/filter_neon.S in favor of the existing C
implementation of Neon optimizations.

releases.json

@@ -1816,6 +1816,7 @@
       "libpng"
     ],
     "versions": [
+      "1.6.44-1",
       "1.6.43-2",
       "1.6.43-1",
       "1.6.42-1",

subprojects/libpng.wrap

@@ -1,8 +1,8 @@
 [wrap-file]
-directory = libpng-1.6.43
-source_url = https://github.com/glennrp/libpng/archive/v1.6.43.tar.gz
-source_filename = libpng-1.6.43.tar.gz
-source_hash = fecc95b46cf05e8e3fc8a414750e0ba5aad00d89e9fdf175e94ff041caf1a03a
+directory = libpng-1.6.44
+source_url = https://github.com/glennrp/libpng/archive/v1.6.44.tar.gz
+source_filename = libpng-1.6.44.tar.gz
+source_hash = 0ef5b633d0c65f780c4fced27ff832998e71478c13b45dfb6e94f23a82f64f7c
 patch_directory = libpng
 
 [provide]

subprojects/packagefiles/libpng/meson.build

@@ -1,7 +1,7 @@
 project(
   'libpng',
   'c',
-  version: '1.6.43', license: 'libpng',
+  version: '1.6.44', license: 'libpng',
   meson_version: '>=0.50.0',
 )
 
@@ -58,25 +58,6 @@ if host_machine.cpu_family() == 'aarch64' or cc.get_define('__ARM_NEON').strip()
     'arm/filter_neon_intrinsics.c',
     'arm/palette_neon_intrinsics.c',
   )
-  if cc.get_id() == 'msvc'
-    cl = find_program('cl')
-    msvc_preprocessed_asm_files = custom_target(
-      'MSVC assembly preprocessing',
-      output: '@[email protected]',
-      input: 'arm/filter_neon.S',
-      command: [cl, '/Fi@OUTPUT@', '/P', '@INPUT@', '-I@OUTDIR@', c_args],
-    )
-    msvc_armasm = find_program('armasm64')
-    png_src += custom_target(
-      'MSVC assembly compilation',
-      output: '@[email protected]',
-      input: msvc_preprocessed_asm_files,
-      command: [msvc_armasm, '@INPUT@', '/Fo@OUTPUT@', '-I@OUTDIR@'],
-    )
-  else
-    png_src += files('arm/filter_neon.S')
-  endif
-
   c_args += '-DPNG_ARM_NEON_OPT=2'
 elif host_machine.cpu_family() in ['x86', 'x86_64']
   png_src += files(