Add minor improvements and cleanup

third_party/dlmalloc/dlmalloc.h

@@ -1248,6 +1248,7 @@ void *dlrealloc_in_place(void *, size_t) hidden;
 void *dlvalloc(size_t) hidden;
 void *dlpvalloc(size_t) hidden;
 void *dlmemalign(size_t, size_t) hidden;
+int dlmalloc_trim(size_t) hidden;
 size_t dlmalloc_usable_size(const void *) hidden;
 int dlposix_memalign(void **, size_t, size_t) hidden;
 void **dlindependent_calloc(size_t, size_t, void *[]) hidden;

third_party/dlmalloc/malloc_trim.c

@@ -20,7 +20,7 @@
  *
  * @return 1 if it actually released any memory, else 0
  */
-int malloc_trim(size_t pad) {
+int dlmalloc_trim(size_t pad) {
   int result = 0;
   ensure_initialization();
   if (!PREACTION(g_dlmalloc)) {

third_party/regex/regerror.c

@@ -49,6 +49,6 @@ static const char kRegexErrors[] =
  */
 size_t regerror(int e, const regex_t *preg, char *buf, size_t size) {
   return 1 + snprintf(buf, size, "%s",
-                      firstnonnull(indexdoublenulstring(kRegexErrors, e),
+                      firstnonnull(IndexDoubleNulString(kRegexErrors, e),
                                    "Unknown error"));
 }

third_party/xed/xederror.c

@@ -22,7 +22,7 @@
 /**
  * Xed error code names.
  *
- *   puts(indexdoublenulstring(kXedErrorNames, xedd->op.error));
+ *   puts(IndexDoubleNulString(kXedErrorNames, xedd->op.error));
  *
  * @see XedError
  */