Merge pull request #377 from maven-nar/feature/fix-NPE-res-build

Fix NPE msvc .res build

Author: GregDomjan

src/main/java/com/github/maven_nar/cpptasks/CCTask.java

@@ -994,7 +994,11 @@ private BuildException runTargetPool(final CCTaskProgressMonitor monitor, BuildE
                   if (compileException == null && exception instanceof BuildException) {
                     compileException = (BuildException) exception;
                   } else {
-                    log(cores[j].getName() + " " + exception + "                                  ", Project.MSG_ERR);
+                    log(cores[j].getName() + " " + exception + " ", Project.MSG_ERR);
+                    final StackTraceElement[] stackTrace = exception.getStackTrace();
+                    for (final StackTraceElement element : stackTrace) {
+                      log(element.toString(),Project.MSG_DEBUG);
+                    }
                   }
                   if (!this.relentless) {
                     cores[j] = null;

src/main/java/com/github/maven_nar/cpptasks/compiler/CommandLineCompiler.java

@@ -571,7 +571,8 @@ protected int getTotalArgumentLengthForInputFile(final File outputDir, final Str
    * arguments without actually spawning the compiler
    */
   protected int runCommand(final CCTask task, final File workingDir, final String[] cmdline) throws BuildException {
-    commands.add(cmdline);
+    if(commands!=null)
+      commands.add(cmdline);
     if (dryRun) return 0;
     return CUtil.runCommand(task, workingDir, cmdline, this.newEnvironment, this.env);
   }