InnoDB: Replace ut_strdup() with mem_strdup()

innobase/include/ut0mem.h

@@ -129,16 +129,6 @@ ut_str_catenate(
 	char*	str1,	/* in: null-terminated string */
 	char*	str2);	/* in: null-terminated string */
 
-/**************************************************************************
-Return a copy of the given string. The returned string must be freed
-using mem_free. */
-
-char*
-ut_strdup(
-/*======*/
-			/* out, own: cnull-terminated string */
-	char*	str);	/* in: null-terminated string */
-
 #ifndef UNIV_NONINL
 #include "ut0mem.ic"
 #endif

innobase/os/os0file.c

@@ -2314,18 +2314,18 @@ os_file_dirname(
 
 	if (last_slash < 0) {
 		/* no slash in the path, return "." */
-		return(ut_strdup((char*)"."));
+		return(mem_strdup("."));
 	}
 
 	/* ok, there is a slash */
 
 	if (last_slash == 0) {
 		/* last slash is the first char of the path */
-		return(ut_strdup((char*)"/"));
+		return(mem_strdup("/"));
 	}
 
 	/* non-trivial directory component */
-	dir = ut_strdup(path);
+	dir = mem_strdup(path);
 	dir[last_slash] = 0;
 
 	return(dir);

innobase/ut/ut0mem.c

@@ -299,27 +299,3 @@ ut_str_catenate(
 
 	return(str);
 }
-
-/**************************************************************************
-Return a copy of the given string. The returned string must be freed
-using mem_free. */
-
-char*
-ut_strdup(
-/*======*/
-			/* out, own: cnull-terminated string */
-	char*	str)	/* in: null-terminated string */
-{
-	ulint	len;
-	char*	copy;
-
-	len = ut_strlen(str);
-
-	copy = mem_alloc(len + 1);
-
-	ut_memcpy(copy, str, len);
-
-	copy[len] = 0;
-
-	return(copy);
-}