[gnome-continuous] Do not overwrite variables

[Emmanuele Bassi <ebassi src gnome org>]

commit 53f2d79c6ed3d75749885238725220da6ea8f7db
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Wed Nov 29 16:40:16 2017 +0000

    Do not overwrite variables
    
    We're using the same variable for two separate iterations, so we need to
    make sure that we're not overwriting its value.

 src/ostree-build-compile-one |   11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)
---
diff --git a/src/ostree-build-compile-one b/src/ostree-build-compile-one
index 5b01f3d..5e980a9 100755
--- a/src/ostree-build-compile-one
+++ b/src/ostree-build-compile-one
@@ -211,17 +211,20 @@ def main(args):
 
     use_make = False
     use_ninja = False
+
     buildfile_path = None
 
     for name in ['build.ninja']:
-        buildfile_path = os.path.join(builddir, name)
-        if os.path.exists(buildfile_path):
+        file_path = os.path.join(builddir, name)
+        if os.path.exists(file_path):
+            buildfile_path = file_path
             use_ninja = True
             break
 
     for name in ['Makefile', 'makefile', 'GNUmakefile']:
-        buildfile_path = os.path.join(builddir, name)
-        if os.path.exists(buildfile_path):
+        file_path = os.path.join(builddir, name)
+        if os.path.exists(file_path):
+            buildfile_path = file_path
             use_make = True
             break