[vte] build: Add debug flags when debug is enabled

[Christian Persch <chpe src gnome org>]

commit fcff57272ea62c2dbfcfc4594bdd85eff7a0c528
Author: Christian Persch <chpe src gnome org>
Date:   Sun Apr 28 14:38:47 2019 +0200

    build: Add debug flags when debug is enabled

 meson.build | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/meson.build b/meson.build
index 12a9acb5..904de93f 100644
--- a/meson.build
+++ b/meson.build
@@ -273,6 +273,12 @@ compiler_flags_common = [
   '-fstack-protector-strong',
 ]
 
+if enable_debug
+  compiler_flags_common += [
+    '-ggdb3',
+  ]
+endif
+
 # These are currently needed but the code should be fixed instead
 compiler_flags_common_undesirable = [
   '-fno-strict-aliasing'