Don't require target library as part of symbol init
diff --git a/sysdeps/linux-gnu/proc.c b/sysdeps/linux-gnu/proc.c
index 18eee17..882d422 100644
--- a/sysdeps/linux-gnu/proc.c
+++ b/sysdeps/linux-gnu/proc.c
@@ -430,9 +430,8 @@
 	void *addr;
 	{
 		struct library_symbol libsym;
-		library_symbol_init(&libsym, NULL,
-				    (target_address_t)rdbg->r_brk, NULL, 0,
-				    LS_TOPLT_NONE);
+		library_symbol_init(&libsym, (target_address_t)rdbg->r_brk,
+				    NULL, 0, LS_TOPLT_NONE);
 		addr = sym2addr(proc, &libsym);
 		library_symbol_destroy(&libsym);
 	}