Address compile warnings (Xcode 12) in the editors

src/pcedit/pc.main.cpp

@@ -80,7 +80,7 @@ extern fs::path progDir;
 short specials_res_id;
 char start_name[256];
 
-void process_args(int argc, char* argv[]) {
+static void process_args(int argc, char* argv[]) {
 	if(argc > 1) {
 		if(load_party(argv[1], univ)) {
 			file_in_mem = argv[1];
@@ -563,7 +563,16 @@ void pick_preferences() {
 	
 	prefsDlog.run();
 	
+	// Suppress the float comparison warning.
+	// We know it's safe here - we're just comparing static values.
+	#ifdef __GNUC__
+	#pragma GCC diagnostic push
+	#pragma GCC diagnostic ignored "-Wfloat-equal"
+	#endif
 	if(get_float_pref("UIScale") != ui_scale)
 		changed_display_mode = true;
+	#ifdef __GNUC__
+	#pragma GCC diagnostic pop
+	#endif
 }
 

src/scenedit/scen.actions.cpp

@@ -2511,8 +2511,6 @@ extern size_t num_strs(short mode); // defined in scen.keydlgs.cpp
 // mode 0 - scen 1 - out 2 - town 3 - journal
 // if just_redo_text not 0, simply need to update text portions
 void start_string_editing(eStrMode mode,short just_redo_text) {
-	long pos;
-	
 	if(just_redo_text == 0) {
 		if(overall_mode < MODE_MAIN_SCREEN)
 			set_up_main_screen();

src/scenedit/scen.main.cpp

@@ -187,7 +187,7 @@ void adjust_windows (sf::RenderWindow & mainPtr, sf::View & mainView) {
 	adjust_window_for_menubar(5, width, height);
 }
 
-void process_args(int argc, char* argv[]) {
+static void process_args(int argc, char* argv[]) {
 	if(argc > 1) {
 		if(load_scenario(argv[1], scenario)) {
 			set_current_town(scenario.last_town_edited);
@@ -726,8 +726,17 @@ void pick_preferences() {
 	
 	prefsDlog.run();
 	
+	// Suppress the float comparison warning.
+	// We know it's safe here - we're just comparing static values.
+	#ifdef __GNUC__
+	#pragma GCC diagnostic push
+	#pragma GCC diagnostic ignored "-Wfloat-equal"
+	#endif
 	if(get_float_pref("UIScale") != ui_scale)
 		changed_display_mode = true;
+	#ifdef __GNUC__
+	#pragma GCC diagnostic pop
+	#endif
 }
 
 void Mouse_Pressed(const sf::Event & event) {