fixed wrong float format detection

Author: raydac

src/main/java/com/igormaznitsa/prologparser/tokenizer/Tokenizer.java

@@ -655,6 +655,9 @@ TokenizerResult readNextToken() {
                         getLastTokenPos());
                   } else {
                     // it is float
+                    if (!Character.isDigit(strBuffer.getLastChar())) {
+                      throw new PrologParserException("Unexpected end of float: " + strBuffer.toString(), this.prevLine, this.prevPos);
+                    }
                     return this.tokenizerResultPool.find().setData(
                         makeTermFromString(strBuffer.toString(), radix, quoting, state),
                         state,

src/test/java/com/igormaznitsa/prologparser/IntegrationTest.java

@@ -1190,8 +1190,7 @@ public void testConformity() {
     assertThrows(PrologParserException.class, () -> parseEd("/**/ write_canonical(f f).").next());
     assertThrows(PrologParserException.class, () -> parseEd("writeq(0'f').", DefaultParserContext.of(FLAG_BLOCK_COMMENTS, Op.make(100, XF, "f"))).next());
 
-
-    //    assertThrows(PrologParserException.class, () -> parseEd("/**/ X = 1.e.", DefaultParserContext.of(FLAG_BLOCK_COMMENTS, Op.make(100, XF, "f"))).next());
+    assertThrows(PrologParserException.class, () -> parseEd("/**/ X = 1.e.", DefaultParserContext.of(FLAG_BLOCK_COMMENTS, Op.make(100, XF, "f"))).next());
     assertThrows(PrologParserException.class, () -> parseEd("/**/ writeq(1 .2).").next());
 //    assertThrows(PrologParserException.class, () -> parseEd("X = 2'1.").next());
     assertThrows(PrologParserException.class, () -> parseEd("is 0'mod'1.").next());