Fix build break caused by previous commit. Partial commits are a source of errors.

Author: ViliusSutkus89

pdf2htmlEX/src/main/java/com/viliussutkus89/android/pdf2htmlex/pdf2htmlEX.java

@@ -119,7 +119,7 @@ public File convert() throws IOException, ConversionFailedException {
 
     Integer retVal = call_pdf2htmlEX(m_pdf2htmlEX_dataDir.getAbsolutePath(),
       m_poppler_dataDir.getAbsolutePath(), m_pdf2htmlEX_tmpDir.getAbsolutePath(),
-      inputPDF.getAbsolutePath(), outputHtml.getAbsolutePath());
+      this.p_inputPDF.getAbsolutePath(), outputHtml.getAbsolutePath());
 
     if (0 != retVal) {
       outputHtml.delete();