Fixed Unicode display of GetProcAddress() errors.

GetProcAddress() takes char *name as an argument but we were
trying to print TCHAR *name when logging that we couldn't find the
function pointer.

imports.cpp

@@ -27,7 +27,19 @@ FARPROC get_import(HMODULE library, const char *function, unsigned long *error)
   FARPROC ret = GetProcAddress(library, function);
   if (! ret) {
     *error = GetLastError();
-    log_event(EVENTLOG_WARNING_TYPE, NSSM_EVENT_GETPROCADDRESS_FAILED, function, error_string(*error), 0);
+    TCHAR *function_name;
+#ifdef UNICODE
+    size_t buflen;
+    mbstowcs_s(&buflen, NULL, 0, function, _TRUNCATE);
+    function_name = (TCHAR *) HeapAlloc(GetProcessHeap(), 0, buflen * sizeof(TCHAR));
+    if (function_name) mbstowcs_s(&buflen, function_name, buflen, function, _TRUNCATE);
+#else
+    function_name = function;
+#endif
+    log_event(EVENTLOG_WARNING_TYPE, NSSM_EVENT_GETPROCADDRESS_FAILED, function_name, error_string(*error), 0);
+#ifdef UNICODE
+    if (function_name) HeapFree(GetProcessHeap(), 0, function_name);
+#endif
   }
 
   return ret;