src,deps: replace LoadLibrary by LoadLibraryW

On Windows, when compiling with `UNICODE` defined, `LoadLibrary` becomes
`LoadLibraryW`. When an ASCII string is passed to that function it
crashes.

PR-URL: https://github.com/iojs/io.js/pull/226
Reviewed-By: Bert Belder <bertbelder@gmail.com>

deps/cares/src/ares_library_init.c

@@ -45,7 +45,7 @@ static int ares_win32_init(void)
 #ifdef USE_WINSOCK
 
   hnd_iphlpapi = 0;
-  hnd_iphlpapi = LoadLibrary("iphlpapi.dll");
+  hnd_iphlpapi = LoadLibraryW(L"iphlpapi.dll");
   if (!hnd_iphlpapi)
     return ARES_ELOADIPHLPAPI;
 
@@ -73,7 +73,7 @@ static int ares_win32_init(void)
    */
 
   hnd_advapi32 = 0;
-  hnd_advapi32 = LoadLibrary("advapi32.dll");
+  hnd_advapi32 = LoadLibraryW(L"advapi32.dll");
   if (hnd_advapi32)
     {
       ares_fpSystemFunction036 = (fpSystemFunction036_t)

src/node_win32_etw_provider.cc

@@ -167,7 +167,7 @@ void NTAPI etw_events_enable_callback(
 void init_etw() {
   events_enabled = 0;
 
-  advapi = LoadLibrary("advapi32.dll");
+  advapi = LoadLibraryW(L"advapi32.dll");
   if (advapi) {
     event_register = (EventRegisterFunc)
       GetProcAddress(advapi, "EventRegister");

src/node_win32_perfctr_provider.cc

@@ -135,7 +135,7 @@ void InitPerfCountersWin32() {
   wcscpy_s(Inst, INST_MAX_LEN, INST_PREFIX);
   _itow_s(pid, Inst + INST_PREFIX_LEN, INST_MAX_LEN - INST_PREFIX_LEN, 10);
 
-  advapimod = LoadLibrary("advapi32.dll");
+  advapimod = LoadLibraryW(L"advapi32.dll");
   if (advapimod) {
     perfctr_startProvider = (PerfStartProviderExFunc)
       GetProcAddress(advapimod, "PerfStartProviderEx");