Fix include

This was working on accident because we build with -Iinclude, but not
all downstreams do. (Our include spellings are... perhaps not the most
robust. Something to rethink sometime.)

Change-Id: Ief0d6a88b4caa82ba0bb433c7e9cbca857632a14
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/74207
Commit-Queue: David Benjamin <davidben@google.com>
Commit-Queue: Adam Langley <agl@google.com>
Auto-Submit: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>

crypto/md4/md4.cc

diff --git a/crypto/md4/md4.cc b/crypto/md4/md4.cc
index 96697b8..a24458f 100644
--- a/crypto/md4/md4.cc
+++ b/crypto/md4/md4.cc
@@ -59,7 +59,7 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include "../crypto/fipsmodule/digest/md32_common.h"
+#include "../fipsmodule/digest/md32_common.h"
 #include "../internal.h"