free can handle NULL perfectly fine

rdtk/librdtk/rdtk_button.c

@@ -87,9 +87,6 @@ rdtkButton* rdtk_button_new(rdtkEngine* engine, rdtkNinePatch* ninePatch)
 
 void rdtk_button_free(rdtkButton* button)
 {
-	if (!button)
-		return;
-
 	free(button);
 }
 

rdtk/librdtk/rdtk_font.c

@@ -644,10 +644,8 @@ rdtkFont* rdtk_font_new(rdtkEngine* engine, const char* path, const char* file)
 	return font;
 
 cleanup:
-	if (fontImageFile)
-		free (fontImageFile);
-	if (fontDescriptorFile)
-		free (fontDescriptorFile);
+	free(fontImageFile);
+	free(fontDescriptorFile);
 	if (font)
 	{
 		if (font->image)
@@ -710,9 +708,6 @@ rdtkFont* rdtk_embedded_font_new(rdtkEngine* engine, BYTE* imageData, int imageS
 
 void rdtk_font_free(rdtkFont* font)
 {
-	if (!font)
-		return;
-
 	free(font);
 }
 

rdtk/librdtk/rdtk_label.c

@@ -72,9 +72,6 @@ rdtkLabel* rdtk_label_new(rdtkEngine* engine)
 
 void rdtk_label_free(rdtkLabel* label)
 {
-	if (!label)
-		return;
-
 	free(label);
 }
 

rdtk/librdtk/rdtk_text_field.c

@@ -87,9 +87,6 @@ rdtkTextField* rdtk_text_field_new(rdtkEngine* engine, rdtkNinePatch* ninePatch)
 
 void rdtk_text_field_free(rdtkTextField* textField)
 {
-	if (!textField)
-		return;
-
 	free(textField);
 }