Fix crashing when having a invalid midi instrument id

Author: OctoFlareDev

scripts/draw_window_midi_import/draw_window_midi_import.gml

@@ -220,7 +220,8 @@ function draw_window_midi_import() {
 	            draw_text_dynamic(x1 + 12 + 4 + tabw[0] + tabw[1] + tabw[2] + tabw[3], y1 + 174 + 20 * a, "-")
 	        } else {
 	            draw_text_dynamic(x1 + 12 + 4 + tabw[0], y1 + 174 + 20 * a, string(midi_channelpatch[b] + 1))
-	            draw_text_dynamic(x1 + 12 + 4 + tabw[0] + tabw[1], y1 + 174 + 20 * a, midi_ins[midi_channelpatch[b], 0])
+				if (midi_channelpatch[b] < 128) draw_text_dynamic(x1 + 12 + 4 + tabw[0] + tabw[1], y1 + 174 + 20 * a, midi_ins[midi_channelpatch[b], 0])
+				else draw_text_dynamic(x1 + 12 + 4 + tabw[0] + tabw[1], y1 + 174 + 20 * a, condstr(language != 1, "Unknown", "未知"))
 	            if (midi_channelins[b] = -1) {
 	                draw_set_color(c_gray)
 	                if (language != 1) draw_text_dynamic(x1 + 12 + 4 + tabw[0] + tabw[1] + tabw[2], y1 + 174 + 20 * a, "Ignore")

scripts/import_midi/import_midi.gml

@@ -152,8 +152,13 @@ function import_midi() {
 				layerstereo[yy] = 100
 	            layername[yy] = "Channel " + string(a + 1)
 	            if (w_midi_name_patch) {
-	                layername[yy] = midi_ins[midi_channelpatch[a], 3]
-	                if (layername[yy] = "") layername[yy] = midi_ins[midi_channelpatch[a], 0]
+					try {
+						layername[yy] = midi_ins[midi_channelpatch[a], 3]
+						if (layername[yy] = "") layername[yy] = midi_ins[midi_channelpatch[a], 0]
+					}
+					catch(e) {
+						layername[yy] = "Unknown"
+					}
 	                if (a = 9) layername[yy] = "Percussion"
 	            }
 	            layerlock[yy] = 0
@@ -165,12 +170,16 @@ function import_midi() {
 	}
 	if (w_midi_remember = 1) {
 	    for (a = 0; a < midi_channels; a += 1) {    
-	        midi_ins[midi_channelpatch[a], 1] = midi_channelins[a]
-	        midi_ins[midi_channelpatch[a], 2] = midi_channeloctave[a]
+			try {
+				midi_ins[midi_channelpatch[a], 1] = midi_channelins[a]
+				midi_ins[midi_channelpatch[a], 2] = midi_channeloctave[a]
+			}
 	    }
 	    for (a = 0; a < midi_percamount; a += 1) {
-	        midi_drum[midi_percnote[a], 1] = midi_percins[a]
-	        midi_drum[midi_percnote[a], 2] = midi_percpitch[a] - 33
+			try {
+				midi_drum[midi_percnote[a], 1] = midi_percins[a]
+				midi_drum[midi_percnote[a], 2] = midi_percpitch[a] - 33
+			}
 	    }
 	} else {
 	    w_midi_removesilent = 1

scripts/open_midi/open_midi.gml

@@ -204,12 +204,24 @@ function open_midi(argument0) {
 	sb_val[midi_sb2] = 0
 	sb_val[midi_sb3] = 0
 	for (a = 0; a < 16; a += 1) { // Load channel settings from database
-	    midi_channelins[a] = midi_ins[midi_channelpatch[a], 1]
-	    midi_channeloctave[a] = midi_ins[midi_channelpatch[a], 2]
+		try {
+			midi_channelins[a] = midi_ins[midi_channelpatch[a], 1]
+			midi_channeloctave[a] = midi_ins[midi_channelpatch[a], 2]
+		}
+		catch(e) {
+			midi_channelins[a] = -1
+			midi_channeloctave[a] = 0
+		}
 	}
 	for (a = 0; a < midi_percamount; a += 1) { // Load percussion settings from database
-	    midi_percins[a] = midi_drum[midi_percnote[a], 1]
-	    midi_percpitch[a] = midi_drum[midi_percnote[a], 2] + 33
+		try {
+		    midi_percins[a] = midi_drum[midi_percnote[a], 1]
+		    midi_percpitch[a] = midi_drum[midi_percnote[a], 2] + 33
+		}
+		catch(e) {
+			midi_percins[a] = -1
+			midi_percpitch[a] = 33
+		}
 	}
 	/* // CODE FOR TESTING INSTRUMENTS
 	midi_channels = 127