parser: scanner: Fix compiler warning

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

diff --git a/src/libpakfire/parser/scanner.l b/src/libpakfire/parser/scanner.l
index d92570673c1c8608b4bc4948ade84449c6d31db2..e8ca4fe7f2d1ba5c88f5d6b437efc97606e29143 100644 (file)
--- a/src/libpakfire/parser/scanner.l
+++ b/src/libpakfire/parser/scanner.l
@@ -73,6 +73,9 @@ COPY:
        return strdup(input);
 }
 
+// Forward declaration
+YY_DECL;
+
 #define unput_string(s) for (int i = strlen(s) - 1; i >= 0; i--) unput(s[i])
 
 static char* copy_string(const char* s) {