ARB prog parser: Don't leak program string

The program string is kept in the program object.  On the second call
into glProgramStringARB the previous kept string would be leaked.

diff --git a/src/mesa/shader/program_parse.y b/src/mesa/shader/program_parse.y
index ae9e15ae5ae05151ee7285a2569638d1cf120d98..c3152aa2f88d7f05030a204452c7d5fe9d19985c 100644 (file)
--- a/src/mesa/shader/program_parse.y
+++ b/src/mesa/shader/program_parse.y
@@ -2278,6 +2278,10 @@ _mesa_parse_arb_program(GLcontext *ctx, GLenum target, const GLubyte *str,
    _mesa_memcpy (strz, str, len);
    strz[len] = '\0';
 
+   if (state->prog->String != NULL) {
+      _mesa_free(state->prog->String);
+   }
+
    state->prog->String = strz;
 
    state->st = _mesa_symbol_table_ctor();