Fix typo in tokenizer (no actual bug)

src/tokenizer.cpp

@@ -746,11 +746,10 @@ exponent:
 	}
 
 	switch (t->curr_rune) {
-	case 'i':
-	case 'j':
-	case 'k':
+	case 'i': case 'j': case 'k':
 		token.kind = Token_Imag;
 		advance_to_next_rune(t);
+		break;
 	}
 
 end: