build/install: Fix exception handling in case of invalid version strings

pisi/atomicoperations.py

@@ -188,7 +188,7 @@ class Install(AtomicOperation):
         try:
             int(release)
             pisi.version.make_version(version)
-        except (ValueError, InvalidVersionError):
+        except (ValueError, pisi.version.InvalidVersionError):
             raise Error(_("%s-%s is not a valid PiSi version format") % (version, release))
 
     def check_relations(self):

pisi/operations/build.py

@@ -589,7 +589,7 @@ class Builder:
         try:
             int(release)
             pisi.version.make_version(version)
-        except (ValueError, InvalidVersionError):
+        except (ValueError, pisi.version.InvalidVersionError):
             raise Error(_("%s-%s is not a valid PiSi version format") % (version, release))
 
     def check_build_dependencies(self):