Add variable initialization to a squelch compiler warning raised by the Apple LLVM C compiler.

Addresses issue UW-Hydro#76

Author: Joe Hamman

src/calc_water_energy_balance_errors.c

@@ -83,6 +83,7 @@ double calc_energy_balance_error(int    rec,
     cum_error = 0;
     Nrecs     = -rec;
     max_error = 0;
+    error = 0.0;
   }
   else {
     error = net_rad - latent - sensible - grnd_flux + snow_fluxes;

src/compute_zwt.c

@@ -26,6 +26,8 @@ double compute_zwt(soil_con_struct  *soil_con,
   int    i;
   double zwt;
 
+  zwt = 999.0;
+
   /** Compute zwt using soil moisture v zwt curve **/
   i = MAX_ZWTVMOIST-1;
   while (i>=1 && moist > soil_con->zwtvmoist_moist[lindex][i]) {

src/get_force_type.c

@@ -46,6 +46,8 @@ void get_force_type(char   *cmdstr,
   char ErrStr[MAXSTRING];
   int  type;
 
+  type = SKIP;
+
   /** Initialize flgstr **/
   strcpy(flgstr,"NULL");
 

src/lakes.eb.c

@@ -164,6 +164,7 @@ int solve_lake(double             snowfall,
   lake->evapw=0.0;
   energy_ice_formation = 0.0;
   energy_out_bottom = energy_out_bottom_ice = 0.0;
+  energy_ice_melt_bot = 0.0;
   lake_snow->vapor_flux=0.0;
   lake->vapor_flux=0.0;
   lake_energy->Tsurf = lake->temp[0];

src/read_vegparam.c

@@ -367,7 +367,8 @@ veg_con_struct *read_vegparam(FILE *vegparam,
 
 void ttrim( char *c ) 
 {
-  while( (*c++ != END) );
+  while( (*c++ != END) )
+    ;
     --c;
   for( ; *--c == NEW; *c = END );
 

src/snow_utility.c

@@ -82,6 +82,8 @@ double snow_density(snow_data_struct *snow, double new_snow, double sswq, double
   double delta_depth;
   double depth_new;
 
+  density = 0.0;
+
   /* Estimate density of new snow based on air temperature */
   if (new_snow > 0.)
     density_new = new_snow_density(Tair);
@@ -214,6 +216,8 @@ double new_snow_density(double air_temp) {
   extern option_struct   options;
   double density_new;
 
+  density_new = 0.0;
+
   if (options.SNOW_DENSITY == DENS_SNTHRM) {
     density_new = 67.9 + 51.3 * exp(air_temp/2.6);
   }