tools: Remove redundant NULL checks before free() (found by Smatch).

tools/widl/parser.y

@@ -1179,7 +1179,7 @@ static typeref_t *uniq_tref(typeref_t *ref)
 static type_t *type_ref(typeref_t *ref)
 {
   type_t *t = ref->ref;
-  if (ref->name) free(ref->name);
+  free(ref->name);
   free(ref);
   return t;
 }

tools/winedump/msmangle.c

@@ -37,7 +37,7 @@ typedef struct _compound_type
 #define INIT_CT(ct) do { memset (&ct, 0, sizeof (ct)); } while (0)
 
 /* free the memory used by a compound structure */
-#define FREE_CT(ct) do { if (ct.expression) free (ct.expression); } while (0)
+#define FREE_CT(ct) free (ct.expression)
 
 /* Flags for data types */
 #define DATA_VTABLE   0x1

tools/winedump/search.c

@@ -348,10 +348,7 @@ static const char *get_type (parsed_symbol *sym, const char *proto, int arg)
 void search_cleanup (void) __attribute__ ((destructor));
 void search_cleanup (void)
 {
-  if (grep_buff)
   free (grep_buff);
-
-  if (fgrep_buff)
   free (fgrep_buff);
 }
 #endif

tools/winedump/symbol.c

@@ -109,18 +109,12 @@ void symbol_clear(parsed_symbol *sym)
  assert (sym->symbol);
 
  free (sym->symbol);
-
- if (sym->return_text)
  free (sym->return_text);
-
- if (sym->function_name)
  free (sym->function_name);
 
  for (i = sym->argc - 1; i >= 0; i--)
  {
-   if (sym->arg_text [i])
    free (sym->arg_text [i]);
-   if (sym->arg_name [i])
    free (sym->arg_name [i]);
  }
  memset (sym, 0, sizeof (parsed_symbol));

tools/wmc/write.c

@@ -274,7 +274,6 @@ void write_h_file(const char *fname)
 				internal_error(__FILE__, __LINE__, "Invalid base for number print");
 			}
 			free(cptr);
-			if(cast)
 			free(cast);
 			break;
 		default:

tools/wrc/parser.y

@@ -2906,9 +2906,7 @@ static resource_t *build_fontdirs(resource_t *tail)
 
 	free(lanfnt);
 clean:
-	if(fnt)
 	free(fnt);
-	if(fnd)
 	free(fnd);
 	free(str.str.cstr);
 	return lst;