Prefix internal LHASH functions.

lh_new is a very short name to be claiming.

Change-Id: I529f5063f9afae56fdb532ae4f4b91bb807322f6
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/48206
Reviewed-by: Adam Langley <agl@google.com>
diff --git a/crypto/mem.c b/crypto/mem.c
index 7cb5f21..883439b 100644
--- a/crypto/mem.c
+++ b/crypto/mem.c
@@ -247,6 +247,8 @@
   return h;
 }
 
+uint32_t OPENSSL_strhash(const char *s) { return OPENSSL_hash32(s, strlen(s)); }
+
 size_t OPENSSL_strnlen(const char *s, size_t len) {
   for (size_t i = 0; i < len; i++) {
     if (s[i] == 0) {