target-sparc: Replace free by g_free

The wrong function was reported by cppcheck.
Signed-off-by: NStefan Weil <sw@weilnetz.de>
Reviewed-by: NAndreas Färber <afaerber@suse.de>
Signed-off-by: NMichael Tokarev <mjt@tls.msk.ru>

target-sparc/cpu.c

@@ -614,7 +614,7 @@ static int cpu_sparc_find_by_name(sparc_def_t *cpu_def, const char *cpu_model)
     return 0;
 
  error:
-    free(s);
+    g_free(s);
     return -1;
 }