Use output from matcher group 3 instead of indexOf

Author: JaredDavis22

src/main/java/org/scijava/parsington/Literals.java

@@ -407,9 +407,8 @@ public static Number parseDecimal(final CharSequence s, final Position pos) {
 		final boolean forceLong = "l".equalsIgnoreCase(force);
 		final boolean forceFloat = "f".equalsIgnoreCase(force);
 		final boolean forceDouble = "d".equalsIgnoreCase(force);
-		final int dot = number.indexOf(".");
 		Number result = null;
-		if ((dot == -1) && !forceFloat && !forceDouble) {
+		if ((m.start(3) == -1) && !forceFloat && !forceDouble) {
 			result = parseInteger(number, forceLong, 10);
 		}
 		if (result == null && !forceLong) {