[cogl/cogl-1.20] Avoid compiler error for uninitialized value

[Emmanuele Bassi <ebassi src gnome org>]

commit 0ad995746a32cce5709d718442c10b3b9ba1edee
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Wed Jun 10 18:41:49 2015 +0100

    Avoid compiler error for uninitialized value
    
    Fixes Cogl compilation on build.gnome.org.

 cogl/cogl-blend-string.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/cogl/cogl-blend-string.c b/cogl/cogl-blend-string.c
index 16cb3ab..5d876bf 100644
--- a/cogl/cogl-blend-string.c
+++ b/cogl/cogl-blend-string.c
@@ -473,7 +473,7 @@ parse_argument (const char *string, /* original user string */
   const char *error_string = NULL;
   ParserArgState state = PARSER_ARG_STATE_START;
   CoglBool parsing_factor = FALSE;
-  CoglBool implicit_factor_brace;
+  CoglBool implicit_factor_brace = FALSE;
 
   arg->source.is_zero = FALSE;
   arg->source.info = NULL;