Take care of two Clang warnings.

source/i18n/decNumber.c

Index: source/i18n/decNumber.c
===================================================================
--- source/i18n/decNumber.c	(revision 122360)
+++ source/i18n/decNumber.c	(working copy)
@@ -1392,6 +1392,8 @@
 /* fastpath in decLnOp.  The final division is done to the requested  */
 /* precision.                                                         */
 /* ------------------------------------------------------------------ */
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Warray-bounds"
 U_CAPI decNumber * U_EXPORT2 uprv_decNumberLog10(decNumber *res, const decNumber *rhs,
                           decContext *set) {
   uInt status=0, ignore=0;         /* status accumulators  */
@@ -1527,6 +1529,7 @@
   #endif
   return res;
   } /* decNumberLog10  */
+#pragma clang diagnostic pop
 
 /* ------------------------------------------------------------------ */
 /* decNumberMax -- compare two Numbers and return the maximum         */
@@ -2800,6 +2803,8 @@
 /* result setexp(approx, e div 2)  % fix exponent                     */
 /* end sqrt                                                           */
 /* ------------------------------------------------------------------ */
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Warray-bounds"
 U_CAPI decNumber * U_EXPORT2 uprv_decNumberSquareRoot(decNumber *res, const decNumber *rhs,
                                 decContext *set) {
   decContext workset, approxset;   /* work contexts  */
@@ -3129,6 +3134,7 @@
   #endif
   return res;
   } /* decNumberSquareRoot  */
+#pragma clang diagnostic pop
 
 /* ------------------------------------------------------------------ */
 /* decNumberSubtract -- subtract two Numbers                          */
@@ -5584,6 +5590,8 @@
 /* 5. The static buffers are larger than might be expected to allow   */
 /*    for calls from decNumberPower.                                  */
 /* ------------------------------------------------------------------ */
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Warray-bounds"
 decNumber * decLnOp(decNumber *res, const decNumber *rhs,
                     decContext *set, uInt *status) {
   uInt ignore=0;                   /* working status accumulator  */
@@ -5805,6 +5813,7 @@
   /* [status is handled by caller]  */
   return res;
   } /* decLnOp  */
+#pragma clang diagnostic pop
 
 /* ------------------------------------------------------------------ */
 /* decQuantizeOp  -- force exponent to requested value                */