deps: update libuv to version 1.6.1

PR-URL: https://github.com/nodejs/io.js/pull/1905
Refs: https://github.com/nodejs/io.js/pull/1791
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>

deps/uv/ChangeLog

@@ -1,3 +1,10 @@
+2015.06.06, Version 1.6.1 (Stable), 30c8be07bb78a66fdee5141626bf53a49a17094a
+
+Changes since version 1.6.0:
+
+* unix: handle invalid _SC_GETPW_R_SIZE_MAX values (cjihrig)
+
+
 2015.06.04, Version 1.6.0 (Stable), adfccad76456061dfcf79b8df8e7dbfee51791d7
 
 Changes since version 1.5.0:

deps/uv/configure.ac

@@ -13,7 +13,7 @@
 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 AC_PREREQ(2.57)
-AC_INIT([libuv], [1.6.0], [https://github.com/libuv/libuv/issues])
+AC_INIT([libuv], [1.6.1], [https://github.com/libuv/libuv/issues])
 AC_CONFIG_MACRO_DIR([m4])
 m4_include([m4/libuv-extra-automake-flags.m4])
 m4_include([m4/as_case.m4])

deps/uv/include/uv-version.h

@@ -32,7 +32,7 @@
 
 #define UV_VERSION_MAJOR 1
 #define UV_VERSION_MINOR 6
-#define UV_VERSION_PATCH 0
+#define UV_VERSION_PATCH 1
 #define UV_VERSION_IS_RELEASE 1
 #define UV_VERSION_SUFFIX ""
 

deps/uv/src/unix/core.c

@@ -1000,6 +1000,7 @@ int uv_os_homedir(char* buffer, size_t* size) {
   uid_t uid;
   size_t bufsize;
   size_t len;
+  long initsize;
   int r;
 
   if (buffer == NULL || size == NULL || *size == 0)
@@ -1023,10 +1024,12 @@ int uv_os_homedir(char* buffer, size_t* size) {
   }
 
   /* HOME is not set, so call getpwuid() */
-  bufsize = sysconf(_SC_GETPW_R_SIZE_MAX);
+  initsize = sysconf(_SC_GETPW_R_SIZE_MAX);
 
-  if (bufsize <= 0)
-    return -EIO;
+  if (initsize <= 0)
+    bufsize = 4096;
+  else
+    bufsize = (size_t) initsize;
 
   uid = getuid();
   buf = NULL;