Fix bad truetype loca tables.

Some fonts have loca tables that aren't sorted or use 0 as an offset to
signal a missing glyph. This fixes the bad loca tables by sorting them
and then rewriting the loca table and potentially re-ordering the glyf
table to match.

Fixes #11131 and bug 1650302.

test/pdfs/.gitignore

@@ -63,6 +63,7 @@
 !issue8372.pdf
 !issue8424.pdf
 !issue8480.pdf
+!bug1650302_reduced.pdf
 !issue8570.pdf
 !issue8697.pdf
 !issue8702.pdf
@@ -121,6 +122,7 @@
 !bug1132849.pdf
 !issue6894.pdf
 !issue5804.pdf
+!issue11131_reduced.pdf
 !Pages-tree-refs.pdf
 !ShowText-ShadingPattern.pdf
 !complex_ttf_font.pdf

test/test_manifest.json

@@ -3268,6 +3268,12 @@
        "link": true,
        "type": "eq"
     },
+    {  "id": "issue11131_reduced",
+       "file": "pdfs/issue11131_reduced.pdf",
+       "md5": "004b7e7d2b133a8dc4fe64aaf3dc9533",
+       "rounds": 1,
+       "type": "eq"
+    },
     {  "id": "issue818",
       "file": "pdfs/issue818.pdf",
       "md5": "dd2f8a5bd65164ad74da2b45a6ca90cc",
@@ -3365,6 +3371,12 @@
        "link": false,
        "type": "load"
     },
+    {  "id": "bug1650302_reduced",
+       "file": "pdfs/bug1650302_reduced.pdf",
+       "md5": "d918c9ec936486e8b6656e10dd909014",
+       "rounds": 1,
+       "type": "eq"
+    },
     {  "id": "blendmode",
       "file": "pdfs/blendmode.pdf",
       "md5": "5a86e7e9333e93c58abc3f382e1e6ea2",