Instrumented libraries: improve handling of custom patches.

third_party/instrumented_libraries/libfontconfig.diff

Index: third_party/instrumented_libraries/libfontconfig.diff
diff --git a/third_party/instrumented_libraries/libfontconfig.diff b/third_party/instrumented_libraries/libfontconfig.diff
deleted file mode 100644
index 19f85f7ad9df17eca95b9a1c6c9a77a207e3233d..0000000000000000000000000000000000000000
--- a/third_party/instrumented_libraries/libfontconfig.diff
+++ /dev/null
@@ -1,13 +0,0 @@
-diff -rupN ./src/fcpat.c ../fontconfig-2.8.0-patched/src/fcpat.c
---- ./src/fcpat.c	2009-11-17 01:46:18.000000000 +0300
-+++ ../fontconfig-2.8.0-patched/src/fcpat.c	2014-01-27 20:11:36.185213935 +0400
-@@ -37,6 +37,9 @@ FcPatternCreate (void)
-     p = (FcPattern *) malloc (sizeof (FcPattern));
-     if (!p)
- 	return 0;
-+    // Silence Valgrind/MemorySanitizer. There is uninitialized padding at the
-+    // end of this structure. When serialized to file, this will cause a report.
-+    memset(p, 0, sizeof(*p));
-     FcMemAlloc (FC_MEM_PATTERN, sizeof (FcPattern));
-     p->num = 0;
-     p->size = 0;