Fix for issue commons-app#1157 Added try-catch block in getBuildVersion function in gitutils.gradle … (commons-app#1158)

* Added try-catch block in getBuildVersion function in gitutils.gradle file.

* Formatting fix

* Add comment

Author: csk1827

gitutils.gradle

@@ -1,10 +1,15 @@
 ext.getBuildVersion = { ->
-    def stdout = new ByteArrayOutputStream()
-    exec {
-        commandLine 'git', 'rev-parse', '--short', 'HEAD'
-        standardOutput = stdout
+    // Short-term fix for #1157. Should ideally look into why method is failing.
+    try {
+        def stdout = new ByteArrayOutputStream()
+        exec {
+            commandLine 'git' , 'rev-parse' , '--short' , 'HEAD'
+            standardOutput = stdout
+        }
+        return stdout.toString().trim()
+    } catch (ignored) {
+        return null
     }
-    return stdout.toString().trim()
 }
 
 ext.getBranchName = { ->