configure: trivial whitespace cleanup

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
diff --git a/configure.ac b/configure.ac
index 88c8753..a336b52 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2091,7 +2091,7 @@
 dnl
 if test -n "$with_gallium_drivers" -a "x$with_gallium_drivers" != xswrast; then
     if test "x$enable_xvmc" = xauto -a "x$have_xvmc_platform" = xyes; then
-	PKG_CHECK_EXISTS([xvmc >= $XVMC_REQUIRED], [enable_xvmc=yes], [enable_xvmc=no])
+        PKG_CHECK_EXISTS([xvmc >= $XVMC_REQUIRED], [enable_xvmc=yes], [enable_xvmc=no])
     fi
 
     if test "x$enable_vdpau" = xauto -a "x$have_vdpau_platform" = xyes; then
@@ -2099,7 +2099,7 @@
     fi
 
     if test "x$enable_omx" = xauto -a "x$have_omx_platform" = xyes; then
-	PKG_CHECK_EXISTS([libomxil-bellagio >= $LIBOMXIL_BELLAGIO_REQUIRED], [enable_omx=yes], [enable_omx=no])
+        PKG_CHECK_EXISTS([libomxil-bellagio >= $LIBOMXIL_BELLAGIO_REQUIRED], [enable_omx=yes], [enable_omx=no])
     fi
 
     if test "x$enable_va" = xauto -a "x$have_va_platform" = xyes; then