x86: correct comments on x86_op_mem.scale
diff --git a/include/x86.h b/include/x86.h
index 2d0e367..5f1b43e 100644
--- a/include/x86.h
+++ b/include/x86.h
@@ -82,7 +82,7 @@
 	unsigned int segment; // segment register (or X86_REG_INVALID if irrelevant)
 	unsigned int base;	// base register (or X86_REG_INVALID if irrelevant)
 	unsigned int index;	// index register (or X86_REG_INVALID if irrelevant)
-	int scale;	// scale for index register (can be 1, or -1)
+	int scale;	// scale for index register
 	int64_t disp;	// displacement value
 } x86_op_mem;