Don't wrap a RuntimeException in another RuntimeException. (#488)

* Don't wrap a RuntimeException in another RuntimeException.

Signed-off-by: Christian Schlichtherle <christian@schlichtherle.de>

Author: christian-schlichtherle

simpleclient/src/main/java/io/prometheus/client/Histogram.java

@@ -219,6 +219,8 @@ public <E> E time(Callable<E> timeable) {
 
       try {
         return timeable.call();
+      } catch (RuntimeException e) {
+        throw e;
       } catch (Exception e) {
         throw new RuntimeException(e);
       } finally {

simpleclient/src/main/java/io/prometheus/client/Summary.java

@@ -226,6 +226,8 @@ public <E> E time(Callable<E> timeable) {
 
       try {
         return timeable.call();
+      } catch (RuntimeException e) {
+        throw e;
       } catch (Exception e) {
         throw new RuntimeException(e);
       } finally {