Fix key only parsing and testing

Author: nathan818fr

src/java-props.ts

@@ -10,7 +10,7 @@ export function parse(str: string): Properties {
     let line;
     while ((line = lr.readLine()) !== undefined) {
         let keyLen = 0;
-        let valueStart = 0;
+        let valueStart = line.length;
         let hasSep = false;
         let backslash = false;
 

test/test.properties

@@ -35,5 +35,5 @@ multiline3: testing\
 always=multiline
 not-multiline:value
 key-only
-key-only-w-spaces1
-   key-only-w-spaces2
+key-only-w-spaces1   
+   key-only-w-spaces2

test/test.properties-result.json

@@ -23,7 +23,7 @@
   "multiline2": "with spaces",
   "multiline3": "testingis cool\nalways=multiline",
   "not-multiline": "value",
-  "key-only": "key-only",
-  "key-only-w-spaces1": "key-only-w-spaces1",
-  "key-only-w-spaces2": "key-only-w-spaces2"
+  "key-only": "",
+  "key-only-w-spaces1": "",
+  "key-only-w-spaces2": ""
 }