maybe better configure fix

r/configure

@@ -50,10 +50,10 @@
 # Currently the configure script doesn't offer much to make this easy.
 # If you expect to rebuild multiple times, you should set up a dev
 # environment.
-# * Installing a dev version as a regular developer.
+# * Installing a dev version as a regular developer. 
 # The best way is to maintain your own cmake build and install it
 # to a directory (not system) that you set as the env var
-# $ARROW_HOME.
+# $ARROW_HOME. 
 #
 # For more information, see the various installation and developer vignettes.
 
@@ -177,7 +177,7 @@ find_arrow () {
  else
  PC_LIB_VERSION=`grep '^Version' ${_LIBARROW_FOUND}/lib/pkgconfig/arrow.pc | sed s/Version:\ //`
  fi
- # This is in an R script for convenience and testability.
+ # This is in an R script for convenience and testability. 
  # Success means the found C++ library is ok to use.
  # Error means the versions don't line up and we shouldn't use it.
  # More specific messaging to the user is in the R script
@@ -253,7 +253,6 @@ do_autobrew () {
  cp tools/autobrew .
  fi
  fi
-
  if ! . autobrew; then
  echo "Failed to retrieve binary for ${PKG_BREW_NAME}"
  fi