Fix elf_read_wine_loader_dbg_info() for the !__ELF__ case.

diff --git a/dlls/dbghelp/elf_module.c b/dlls/dbghelp/elf_module.c
index 84efa05..859ce18 100644
--- a/dlls/dbghelp/elf_module.c
+++ b/dlls/dbghelp/elf_module.c
@@ -968,9 +968,9 @@
     return FALSE;
 }
 
-unsigned long elf_read_wine_loader_dbg_info(struct process* pcs)
+BOOL elf_read_wine_loader_dbg_info(struct process* pcs)
 {
-    return -1;
+    return FALSE;
 }
 
 struct module*  elf_load_module(struct process* pcs, const char* name)