update libpng

update libpng, the repo now requires a vcpkg setup for integrating but skipping the install step should allow it to work for windows an linux, mac might need more

Engine/lib/lpng/contrib/visupng/.editorconfig

@@ -0,0 +1,23 @@
+# https://editorconfig.org
+
+root = true
+
+[*]
+charset = utf-8
+end_of_line = unset
+indent_size = 4
+indent_style = space
+insert_final_newline = true
+max_doc_length = 80
+max_line_length = 100
+trim_trailing_whitespace = true
+
+[*.rc]
+end_of_line = crlf
+trim_trailing_whitespace = unset
+
+[*.ds[pw]]
+end_of_line = crlf
+max_doc_length = unset
+max_line_length = unset
+trim_trailing_whitespace = unset

Engine/lib/lpng/contrib/visupng/VisualPng.c

@@ -103,7 +103,7 @@ int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
         return 0;
     }
 
-    /* if filename given on commandline, store it */
+    /* if filename given on command line, store it */
     if ((szCmdLine != NULL) && (*szCmdLine != '\0'))
         if (szCmdLine[0] == '"')
             strncpy (szCmdFileName, szCmdLine + 1, strlen(szCmdLine) - 2);