[jhbuild] sys'install: Catch right exception from subprocess

[Daniel Boles <dboles src gnome org>]

commit f652e974629720c4c4a2ac2bfeb01ebf1414d51e
Author: Daniel Boles <dboles src gnome org>
Date:   Mon Dec 5 21:30:08 2016 +0000

    sys'install: Catch right exception from subprocess
    
    Credit to mcatanzaro!
    
    https://bugzilla.gnome.org/show_bug.cgi?id=775668

 jhbuild/utils/systeminstall.py |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/jhbuild/utils/systeminstall.py b/jhbuild/utils/systeminstall.py
index 10e18d6..8bd0124 100644
--- a/jhbuild/utils/systeminstall.py
+++ b/jhbuild/utils/systeminstall.py
@@ -47,7 +47,7 @@ def get_installed_pkgconfigs(config):
             versions = stdout.splitlines()
             if len(versions) == len(pkgs):
                 return dict(zip(pkgs, versions))
-        except OSError:
+        except subprocess.CalledProcessError:
             pass
 
         # We have to rather inefficiently repeatedly fork to work around
@@ -60,7 +60,7 @@ def get_installed_pkgconfigs(config):
             stdout = proc.communicate()[0]
             proc.wait()
             pkgversions[pkg] = stdout.strip()
-    except OSError: # pkg-config not installed
+    except subprocess.CalledProcessError: # pkg-config not installed
         pass
     return pkgversions