fix squash command detection

Author: hrach

src/commonMain/kotlin/main.kt

@@ -22,7 +22,7 @@ fun main(args: Array<String>) {
 				throw ExitException()
 			}
 		}
-	} catch (e: ExitException) {
+	} catch (_: ExitException) {
 		// no-op
 	}
 }

src/commonMain/kotlin/viewmodel.kt

@@ -20,7 +20,7 @@ class ViewModel(
 	val selectedLine: MutableStateFlow<IntRange> = MutableStateFlow(-1..-1)
 
 	private var dirUp: Boolean = true
-	private val commitLineRegexp = """^(pick|reword|edit|sqaush|fixup|drop).*""".toRegex()
+	private val commitLineRegexp = """^(pick|reword|edit|squash|fixup|drop).*""".toRegex()
 	private val updateRefLineRegexp = """^(#\s+)?update-ref.*""".toRegex()
 
 	init {