Invert the #ifdef'ry to easily restrict tcg_exec_init() declaration
to CONFIG_TCG.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 include/sysemu/tcg.h | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/include/sysemu/tcg.h b/include/sysemu/tcg.h
index 00349fb18a7..fddde2b6b9a 100644
--- a/include/sysemu/tcg.h
+++ b/include/sysemu/tcg.h
@@ -8,13 +8,15 @@
 #ifndef SYSEMU_TCG_H
 #define SYSEMU_TCG_H
 
+#ifndef CONFIG_TCG
+#define tcg_enabled() 0
+#else
+
 void tcg_exec_init(unsigned long tb_size, int splitwx);
 
-#ifdef CONFIG_TCG
 extern bool tcg_allowed;
 #define tcg_enabled() (tcg_allowed)
-#else
-#define tcg_enabled() 0
-#endif
+
+#endif /* CONFIG_TCG */
 
 #endif
-- 
2.26.2