tweaks: reshuffle a few lines, for brevity or speed or consistency

Also, don't compare case-insensitively where it is not needed.

src/global.c

@@ -489,7 +489,7 @@ int keycode_from_string(const char *keystring)
 		if (strcasecmp(keystring, "^Space") == 0)
 			return 0;
 #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__APPLE__)
-		if (strcasecmp(keystring, "^H") == 0)
+		if (strcmp(keystring, "^H") == 0)
 			return KEY_BACKSPACE;
 #endif
 		if (keystring[1] == '/' && keystring[2] == '\0')
@@ -499,10 +499,10 @@ int keycode_from_string(const char *keystring)
 		else
 			return -1;
 	} else if (keystring[0] == 'M') {
-		if (strcasecmp(keystring, "M-Space") == 0)
-			return (int)' ';
 		if (keystring[1] == '-' && keystring[3] == '\0')
 			return tolower((unsigned char)keystring[2]);
+		if (strcasecmp(keystring, "M-Space") == 0)
+			return (int)' ';
 		else
 			return -1;
 	} else if (keystring[0] == 'F') {
@@ -510,9 +510,9 @@ int keycode_from_string(const char *keystring)
 		if (fn < 1 || fn > 24)
 			return -1;
 		return KEY_F0 + fn;
-	} else if (!strcasecmp(keystring, "Ins"))
+	} else if (strcasecmp(keystring, "Ins") == 0)
 		return KEY_IC;
-	else if (!strcasecmp(keystring, "Del"))
+	else if (strcasecmp(keystring, "Del") == 0)
 		return KEY_DC;
 	else
 		return -1;
@@ -523,11 +523,7 @@ void assign_keyinfo(keystruct *s, const char *keystring, const int keycode)
 {
 	s->keystr = keystring;
 	s->meta = (keystring[0] == 'M' && keycode == 0);
-
+	s->keycode = (keycode ? keycode : keycode_from_string(keystring));
-	if (keycode)
-		s->keycode = keycode;
-	else
-		s->keycode = keycode_from_string(keystring);
 }
 
 /* These two tags are used elsewhere too, so they are global. */

src/rcfile.c

@@ -428,12 +428,11 @@ void parse_binding(char *ptr, bool dobind)
 	keycopy[0] = toupper((unsigned char)keycopy[0]);
 	keycopy[1] = toupper((unsigned char)keycopy[1]);
 	if (keycopy[0] == 'M' && keycopy[1] == '-') {
-		if (keycopy[2] != '\0')
+		if (keycopy[2] == '\0') {
-			keycopy[2] = toupper((unsigned char)keycopy[2]);
-		else {
 			jot_error(N_("Key name is too short"));
 			goto free_things;
-		}
+		} else
+			keycopy[2] = toupper((unsigned char)keycopy[2]);
 	}
 
 	/* Allow the codes for Insert and Delete to be rebound, but apart